CN103620748A - 保留替代栅极晶体管制造中的uv固化的应力益处 - Google Patents
保留替代栅极晶体管制造中的uv固化的应力益处 Download PDFInfo
- Publication number
- CN103620748A CN103620748A CN201280022389.9A CN201280022389A CN103620748A CN 103620748 A CN103620748 A CN 103620748A CN 201280022389 A CN201280022389 A CN 201280022389A CN 103620748 A CN103620748 A CN 103620748A
- Authority
- CN
- China
- Prior art keywords
- stress
- layer
- nitride
- tensile
- nitride layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008901 benefit Effects 0.000 title description 11
- 238000004519 manufacturing process Methods 0.000 title description 6
- 238000000034 method Methods 0.000 claims abstract description 60
- 239000004065 semiconductor Substances 0.000 claims abstract description 33
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 230000005669 field effect Effects 0.000 claims abstract description 12
- 230000001939 inductive effect Effects 0.000 claims abstract 13
- 150000004767 nitrides Chemical class 0.000 claims description 65
- 229910052751 metal Inorganic materials 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 46
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 20
- 229920005591 polysilicon Polymers 0.000 claims description 19
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 14
- 238000001723 curing Methods 0.000 claims description 14
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 14
- 238000003848 UV Light-Curing Methods 0.000 claims description 6
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- CEPICIBPGDWCRU-UHFFFAOYSA-N [Si].[Hf] Chemical compound [Si].[Hf] CEPICIBPGDWCRU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- -1 hafnium nitride Chemical class 0.000 claims description 3
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 2
- RVSGESPTHDDNTH-UHFFFAOYSA-N alumane;tantalum Chemical compound [AlH3].[Ta] RVSGESPTHDDNTH-UHFFFAOYSA-N 0.000 claims 4
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 claims 4
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims 2
- 229910003468 tantalcarbide Inorganic materials 0.000 claims 2
- 239000000463 material Substances 0.000 description 22
- 238000000151 deposition Methods 0.000 description 9
- 230000008021 deposition Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 238000005728 strengthening Methods 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 230000002708 enhancing effect Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 229910001339 C alloy Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- AXQKVSDUCKWEKE-UHFFFAOYSA-N [C].[Ge].[Si] Chemical compound [C].[Ge].[Si] AXQKVSDUCKWEKE-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000927 Ge alloy Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910021483 silicon-carbon alloy Inorganic materials 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/791—Arrangements for exerting mechanical stress on the crystal lattice of the channel regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28114—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor characterised by the sectional shape, e.g. T, inverted-T
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/0223—Manufacture or treatment of FETs having insulated gates [IGFET] having source and drain regions or source and drain extensions self-aligned to sides of the gate
- H10D30/0227—Manufacture or treatment of FETs having insulated gates [IGFET] having source and drain regions or source and drain extensions self-aligned to sides of the gate having both lightly-doped source and drain extensions and source and drain regions self-aligned to the sides of the gate, e.g. lightly-doped drain [LDD] MOSFET or double-diffused drain [DDD] MOSFET
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/751—Insulated-gate field-effect transistors [IGFET] having composition variations in the channel regions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/791—Arrangements for exerting mechanical stress on the crystal lattice of the channel regions
- H10D30/792—Arrangements for exerting mechanical stress on the crystal lattice of the channel regions comprising applied insulating layers, e.g. stress liners
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/01—Manufacture or treatment
- H10D64/017—Manufacture or treatment using dummy gates in processes wherein at least parts of the final gates are self-aligned to the dummy gates, i.e. replacement gate processes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
- H10D64/27—Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates
- H10D64/311—Gate electrodes for field-effect devices
- H10D64/411—Gate electrodes for field-effect devices for FETs
- H10D64/511—Gate electrodes for field-effect devices for FETs for IGFETs
- H10D64/517—Gate electrodes for field-effect devices for FETs for IGFETs characterised by the conducting layers
- H10D64/518—Gate electrodes for field-effect devices for FETs for IGFETs characterised by the conducting layers characterised by their lengths or sectional shapes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0128—Manufacturing their channels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/013—Manufacturing their source or drain regions, e.g. silicided source or drain regions
- H10D84/0133—Manufacturing common source or drain regions between multiple IGFETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0135—Manufacturing their gate conductors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0167—Manufacturing their channels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/0123—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs
- H10D84/0126—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs
- H10D84/0165—Integrating together multiple components covered by H10D12/00 or H10D30/00, e.g. integrating multiple IGBTs the components including insulated gates, e.g. IGFETs the components including complementary IGFETs, e.g. CMOS devices
- H10D84/0172—Manufacturing their gate conductors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D84/00—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers
- H10D84/01—Manufacture or treatment
- H10D84/02—Manufacture or treatment characterised by using material-based technologies
- H10D84/03—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology
- H10D84/038—Manufacture or treatment characterised by using material-based technologies using Group IV technology, e.g. silicon technology or silicon-carbide [SiC] technology using silicon technology, e.g. SiGe
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02345—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to radiation, e.g. visible light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28088—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being a composite, e.g. TiN
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/601—Insulated-gate field-effect transistors [IGFET] having lightly-doped drain or source extensions, e.g. LDD IGFETs or DDD IGFETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/667—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of alloy material, compound material or organic material contacting the insulator, e.g. TiN workfunction layers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Formation Of Insulating Films (AREA)
Abstract
一种形成半导体结构的方法包括:在设置于衬底之上的一个或多个部分完成的场效应晶体管(FET)器件之上形成应力诱导层,所述一个或多个部分完成的FET器件包括牺牲伪栅极结构;对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构;以及在对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构之后,进行对所述应力诱导层的紫外(UV)固化,以增强由所述应力诱导层最初施加在所述一个或多个部分完成的FET器件的沟道区上的应力的值。
Description
技术领域
本发明总体上涉及半导体器件制造,更具体地,涉及用于保留替代栅极晶体管制造中的紫外(UV)固化的拉伸应力益处的方法和结构。
背景技术
场效应晶体管(FET)广泛用在用于与模拟和数字电信号二者相关的开关、放大、过滤及其它任务的电子工业中。这些场效应晶体管中最常见的是金属氧化物半导体场效应晶体管(MOSFET或MOS),其中栅极结构被加电以在下面的半导体本体的沟道区中产生电场,由此允许电子行经该半导体本体的源极区和漏极区之间的沟道。互补MOS(CMOS)器件已经变得在半导体工业中广泛应用,其中n型和p型(NFET和PFET)FET二者都用于制造逻辑和其它电路。
典型地通过向沟道两侧的半导体本体的目标区域添加掺杂剂,形成FET的源极区和漏极区。栅极结构形成在沟道上方,其包括位于沟道之上的栅极电介质以及位于栅极电介质上方的栅极导体。栅极电介质是绝缘体材料,其在电压被施加到栅极导体时防止大的泄漏电流流入沟道,同时允许所施加的栅极电压以可控的方式在沟道区内建立横向电场。常规的MOS晶体管典型地包括通过在硅晶片表面之上沉积或者生长二氧化硅(SiO2)或氧氮化硅而形成的栅极电介质,其中掺杂的多晶硅形成在SiO2之上以用作栅极导体。
半导体器件制造中不断的趋势包括电器件特征尺寸的减小(即,按比例缩小),以及在器件开关速度和功耗方面器件性能的提高。可以通过减小器件的栅极导体下方的源极区与漏极区之间的距离(称为栅极或沟道长度),以及通过减小形成在半导体表面之上的栅极电介质层的厚度,来提高MOS晶体管性能。然而,SiO2栅极电介质的厚度能够减小的程度有着电学和物理极限。例如,薄的SiO2栅极电介质容易发生由于电子直接隧穿通过薄栅极电介质而导致的栅极隧穿泄漏电流。
因此,近来按比例缩小MOS和CMOS晶体管的努力已经关注于介电常数大于SiO2的介电常数(例如,大于约3.9)的高k电介质材料。与按比例缩小的SiO2相比,高k电介质材料可以以较厚的层形成,而仍产生等效的场效应性能。这种高k电介质材料的相关电性能经常以等效氧化物厚度(EOT)表达,这是因为高k材料层可以较厚,同时仍提供与薄得多的SiO2层等效的电效应。由于介电常数“k”高于二氧化硅,可以利用较厚的高k电介质层来减小隧穿泄漏电流,同时仍实现与较薄的热生长SiO2层等效的电学性能。
发明内容
在一个方面,一种形成半导体结构的方法包括:在设置于衬底之上的一个或多个部分完成的场效应晶体管(FET)器件之上形成应力诱导层,所述一个或多个部分完成的FET器件包括牺牲伪栅极结构;对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构;以及在对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构之后,进行对所述应力诱导层的紫外(UV)固化,以增强由所述应力诱导层最初施加在所述一个或多个部分完成的FET器件的沟道区上的应力的值。
在另一个方面,一种形成半导体结构的方法包括:在设置于衬底之上的一个或多个部分完成的n型场效应晶体管(NFET)器件之上形成拉伸氮化物层,所述一个或多个部分完成的NFET器件包括多晶硅牺牲伪栅极结构;对所述拉伸氮化物层进行平面化并且去除所述多晶硅牺牲伪栅极结构;用一个或多个金属栅极层填充通过去除所述多晶硅牺牲伪栅极结构而界定(define)的沟槽;对所述一个或多个金属栅极层进行平面化;以及进行对所述拉伸氮化物层的紫外(UV)固化,以增强由所述拉伸氮化物层最初施加在所述一个或多个部分完成的NFET器件的沟道区上的应力的值。
在又一个方面,一种形成半导体结构的方法包括:在设置于衬底之上的一个或多个部分完成的n型场效应晶体管(NFET)器件之上形成拉伸氮化物层,所述一个或多个部分完成的NFET器件包括多晶硅牺牲伪栅极结构;对所述拉伸氮化物层进行平面化并且去除所述多晶硅牺牲伪栅极结构;以及进行对所述拉伸氮化物层的紫外(UV)固化,以增强由所述拉伸氮化物层最初施加在所述一个或多个部分完成的NFET器件的沟道区上的应力的值;在所述UV固化之后,用一个或多个金属栅极层填充通过去除所述多晶硅牺牲伪栅极结构而界定的沟槽;以及对所述一个或多个金属栅极层进行平面化。
在再一个方面,一种半导体结构包括:设置于衬底之上的多个n型场效应晶体管(NFET)器件;形成在所述衬底之上并且位于所述NFET器件的栅极结构之间的紫外(UV)固化的拉伸氮化物层,其中部分所述UV固化的拉伸氮化物层具有梯形轮廓,该梯形轮廓的底端宽于该梯形轮廓的顶端;以及所述NFET器件的所述栅极结构,其也具有梯形轮廓,该梯形轮廓的顶端宽于该梯形轮廓的底端。
附图说明
参考示例性附图,其中在若干个图中相似的部件标以相似的附图标记:
图1至5是示例出用于替代金属栅极晶体管形成的工艺流程的横截面视图,该替代金属栅极晶体管形成包括对应力层的紫外(UV)固化,其中:
图1示例出在多个部分完成的NFET器件之上氮化硅应力层的形成;
图2示例出对图1的应力层的UV固化,由此增加了由应力层施加的拉伸应力;
图3示例出对图2的应力层的平面化以及NFET器件的伪栅极结构的去除,这减小了由应力层施加的拉伸应力;
图4示例出在由图3中伪栅极去除得到的沟槽内金属栅极材料的形成;
图5示例出图4的金属栅极材料的平面化;
图6至10是示例出根据示例性实施例用于替代金属栅极晶体管形成的工艺流程的横截面视图,该替代金属栅极晶体管形成包括对应力层的UV固化,其中:
图6示例出在多个部分完成的NFET器件之上氮化硅应力层的形成;
图7示例出对图6的应力层的平面化以及NFET器件的伪栅极结构的去除;
图8示例出在由图7中伪栅极去除得到的沟槽内金属栅极材料的形成;
图9示例出对图8的金属栅极材料的平面化;
图10示例出对图9的应力层的UV固化,由此增加了由应力层施加的拉伸应力;
图11至15是示例出根据另一示例性实施例的用于替代金属栅极晶体管形成的工艺流程的横截面视图,该替代金属栅极晶体管形成包括对应力层的UV固化,其中:
图11示例出在多个部分完成的NFET器件之上氮化硅应力层的形成;
图12示例出图11的应力层的平面化以及NFET器件的伪栅极结构的去除;
图13示例出在金属栅极填充之前对图12的应力层的UV固化,由此增加了由应力层施加的拉伸应力;
图14示例出在图13中的结构的沟槽内金属栅极材料的形成;以及
图15示例出对图14的金属栅极材料的平面化。
具体实施方式
就高k金属栅极(HKMG)技术而言,用于将金属栅引入标准CMOS工艺流程的两种主要方法是“先栅极(gate first)”工艺或“后栅极(gatelast)”工艺。后者也称为“替代栅极”或者替代金属栅极(RMG)工艺。在先栅极工艺中,在多晶硅栅极沉积之前完成高k电介质和金属工艺。在形成源极和漏极之前与多晶硅栅极材料一起减式蚀刻金属栅极材料。
另一方面,RMG工艺架构避免了在先栅极架构中遇到的功函数材料稳定性的问题。此处,伪栅极结构被用于自对准源极和漏极注入和退火,之后剥掉伪栅极材料并且用高k和金属栅极材料替代伪栅极材料。尽管该工艺比先栅极技术更复杂,但是替代栅极流程的优点包括使用分开的PMOS和NMOS金属,来进行功函数的最优化。此外,这两种金属不暴露于高温,简化了材料选择。另外,多晶硅栅极的去除实际上可用于增强应变技术,由此增加驱动电流。由于前述功函数限制,RMG工艺目前是22纳米(nm)CMOS技术的前沿途径。
如现有技术中已知的,应力衬里(liner)(例如,对于PFET器件,压缩衬里;对于NFET器件,拉伸衬里)在FET之上的形成增强了晶体管沟道中多数载流子的迁移率。在NFET器件的情况下,示例性应力衬里材料是氮化硅(SiN),其在NFET沟道上提供了在约1.6吉帕斯卡(GPa)范围内的拉伸应力。可以与氮化硅拉伸衬里形成结合使用的一种技术是诸如由例如激光产生的紫外(UV)固化的应用。对受到拉伸应力的氮化物膜的UV固化可以通过重新构造存在于该氮化物膜中的硅-氢(Si-H)/氮-氢(N-H)键来增强该氮化物膜中的拉伸应力。通过将氮化物暴露于UV辐射进行对氮化物的UV固化,所述UV辐射具有在约10纳米(nm)到约400nm的范围内的波长。氮化物膜中增强的应力在UV固化的氮化物膜位于其之上的FET沟道中诱导对应的增强的应力,这增加了FET沟道中的载流子迁移率。
典型地,氮化物层沉积和UV固化工艺组合在一起,使得氮化物层在其被平面化之前被固化。然而,在RMG工艺流程的情况下,UV固化所提供的附加益处可能由于与RMG技术相关联的化学机械抛光(CMP)和伪栅极去除工艺而被减少或中和。沿着沟道方向的单轴应力弛豫使由UV固化带来的益处无效。通过示例的方式,图1至5是示例出用于替代金属栅极晶体管形成的工艺流程的横截面视图,该替代金属栅极晶体管形成包括对应力层的紫外(UV)固化。
如图1所示,半导体结构100包括其中形成有浅沟槽隔离(STI)结构104的半导体衬底102。半导体衬底102包括半导体材料,该半导体材料可以选自但不限于硅、锗、硅锗合金、硅碳合金、硅锗碳合金、砷化镓、砷化铟、磷化铟、III-V化合物半导体材料、II-VI化合物半导体材料、有机半导体材料以及其它化合物半导体材料。当半导体衬底102的半导体材料是包含单晶硅的半导体材料时,该包含单晶硅的半导体材料可以选自单晶硅、单晶硅碳合金、单晶硅锗合金、以及单晶硅锗碳合金。
在CMOS器件中,半导体衬底102的半导体材料可以适当地掺有p型掺杂剂原子或掺有n型掺杂剂原子。在所示出的具体例子中,在STI结构104之间示出的部分完成的晶体管器件是NFET器件106,因此半导体102是用p型原子掺杂的。半导体衬底102的掺杂剂浓度的范围可以为约1.0x1015原子/cm3到约1.0x1019原子/cm3,更具体地为约1.0x1016原子/cm3到约3.0x1018原子/cm3,但本申请中也预期更小或更大的掺杂剂浓度。此外,半导体衬底102可以是体衬底、绝缘体上半导体或者绝缘体上硅(SOI)衬底或混合衬底。浅沟槽隔离结构104包括诸如氧化硅或氮化硅的电介质材料,并且可以通过本领域中公知的方法形成。
也如图1中所示,半导体结构100是替代栅极FET技术的一个例子。因此,该器件包括通过离子注入形成的源极延伸区和漏极延伸区108,其中伪栅极结构位于适当位置。伪栅极结构可以包括形成在栅极电介质层112上的牺牲多晶硅材料110。在一些实施例中,栅极电介质层112也可以是牺牲栅极电介质层并且因此形成伪栅极结构的一部分。或者,栅极电介质材料层112可以是永久栅极电介质层并且包括诸如氧化铪(HfO2)的高k材料,例如具有SiO2界面层。
源极延伸区和漏极延伸区108具有与衬底102的掺杂相反导电类型的掺杂。因此,在所示的NFET例子中,由于衬底102具有p型掺杂,因此源极延伸区和漏极延伸区108具有n型掺杂。也在图1中描绘了源极和漏极区114,它们是例如通过与延伸区106相同导电类型的离子注入形成的。在伪栅极结构和侧壁间隔物116处于适当位置的情况下注入源极和漏极区114。例如,通过沉积保形的(conformal)电介质材料层(例如,以及诸如氮化硅的不透氧材料)并且之后进行各向异性离子蚀刻,形成侧壁间隔物116。直接在伪栅极结构的侧壁上形成的电介质材料层的部分在各向异性蚀刻之后保留以构成侧壁间隔物116。也在牺牲多晶硅110的顶上示例出保护硬掩膜118,其为与侧壁间隔物116相同或不同的材料。
图1中还示出,诸如例如SiN的拉伸氮化物层120形成在整个结构100之上。例如,可通过物理气相沉积(PVD)、化学气相沉积(CVD)、等离子体增强的CVD(PECVD)、高密度等离子体CVD(HDPCVD)和旋涂技术形成所述拉伸氮化物层120。在最初沉积时,氮化物层120可以提供约0.7吉帕斯卡(GPa)量级的拉伸应力。然后,如图2所示,使用如由曲线箭头所指示的UV辐射固化氮化物层120,以增强其应力特性,其中增强的应力氮化物层用120'表示。借助于UV固化而增强的应力氮化物层120'可以提供约1.6GPa量级的增强的拉伸应力。
然后如图3所示,例如通过CMP平面化该增强的应力氮化物层120',之后至少去除伪栅极结构的牺牲多晶硅110,以形成沟槽122。注意,现在在图3中再次用附图标记120表示氮化物层,这反映了由于固化之后的应力层的平面化导致的所得到的应力减小(例如,减小到约1.1Gpa或更低)。根据RMG处理,在器件之上形成一个或多个金属栅极层(一般由124示出),如图4所示。例如,对于NFET器件,金属栅极层124可以包括被选择为将功函数设定在硅导带边缘周围的功函数设定金属层,该功函数设定金属层诸如例如是:氮化钛、氮化钽、钛铝、氮化钛铝、钽铝、氮化钽铝、铪硅合金、氮化铪或碳化钽。同样,在栅极电介质层112是牺牲层的情况下,新的栅极电介质层(例如,高k)将在沉积金属栅极层124之前形成,之后进行600℃的退火用于高k电介质的致密化。
然后,如图5中所示,对金属栅极层124进行平面化,其后可以如现有技术中所示地继续CMOS器件处理。然而,应当理解,由于上述RMG工艺流程,氮化物层120的UV固化的益处可被有效中和。
因此,此处公开的是用于在替代栅极晶体管制造中保留紫外(UV)固化的应力益处的方法和结构。通过将氮化物沉积和UV固化工艺分开使得固化在氮化物层沉积和伪栅去除之后进行,可以完全保留UV固化的应力益处。在下文所述的一个具体实施例中,与UV工艺导致的膜收缩相关联的氮化物形态改变,相比于均匀的栅金属沉积,提供了额外的益处。随着栅极长度进一步按比例缩小,间隙填充变得越来越有挑战,该实施例提供了减轻这一问题的方案。
现在总体参考图6至10,示出了一系列横截面视图,其示例出根据示例性实施例的用于替代金属栅极晶体管形成的工艺流程,该替代金属栅极晶体管形成包括对应力层的UV固化。图6示例出与图1的处理点基本类似的处理点,其中诸如例如SiN的拉伸氮化物层120形成在具有伪栅极结构的部分形成的NFET器件106的整个结构100之上。然而,不是在此工艺点进行对氮化物层120的UV固化,而是替代地例如通过CMP来平面化氮化物层120,之后至少去除伪栅极结构的牺牲多晶硅110,如图7所示。
然后,如图8所示,在包括通过牺牲多晶硅去除而留下的沟槽112的器件100之上形成一个或多个金属栅极层(一般由124图示)。同样,在此点,尚未对氮化物层120进行UV固化。在图9中,金属栅极层124被平面化,由此界定RMG形成的NFET器件106。在金属栅极结构位于适当位置的情况下,然后对氮化物层120进行UV固化,如图10中所示。UV固化导致氮化物层的所施加的应力增强,该氮化物层现在在图10中用120'图示。同样,由于UV固化,由增强的氮化物层120'施加的单轴拉伸应力从约0.7GPa增加到约1.6GPa。此外,由于增强的氮化物层120'已经被平面化,因此器件100准备好用于进一步的CMOS处理步骤,所述进一步的CMOS处理步骤不影响增强的氮化物层120'的所施加的应力的完整性或有效性。
现在总体参考图11-15,示出了一系列横截面视图,其示例出根据示例性实施例的用于替代金属栅极晶体管形成的工艺流程,该替代金属栅极晶体管形成包括对应力层的UV固化。图6示例出与图1的处理点基本类似的处理点,其中诸如例如SiN的拉伸氮化物层120形成在具有伪栅极结构的部分形成的NFET器件106的整个结构100之上。图11示例出与图1的处理点基本类似的处理点,其中诸如例如SiN的拉伸氮化物层120形成在具有伪栅极结构的部分形成的NFET器件106的整个结构100之上。与之前描述的实施例的情况一样,不是在此工艺点进行对氮化物层120的UV固化,而是替代地例如通过CMP来平面化氮化物层120,之后至少去除伪栅极结构的牺牲多晶硅110,如图12所示。
然而,与图6-10的实施例形成对比,在该实施例中,在沟槽122的金属填充之前对氮化物层120进行UV固化,这在图13中反映。此处,注意除了增加增强的氮化物层120'的所施加的应力之外,UV固化也导致增强的氮化物层120'的体积收缩(例如约10%),这是因为膜变得更致密。特别地,在牺牲多晶硅去除之后且在替代栅金属沉积之前进行的UV固化导致增强的氮化物层120'以及所得到的经修改的沟槽122'轮廓的梯形轮廓。增强的氮化物层120'的梯形轮廓在基部较宽并且在顶部较窄,而经修改的沟槽122'的梯形轮廓在底端较窄并且在顶端较宽。
这种轮廓对于随后的金属栅极填充工艺而言是有利的,如图14所示。这里,在器件100(包括通过牺牲多晶硅去除和UV固化而界定的经修改的沟槽122')之上形成一个或多个金属栅极层124。与基本垂直的沟槽轮廓或者在顶部较窄的沟槽轮廓相对照,其中氮化物层的体积收缩引起沟槽的顶部加宽的梯形沟槽轮廓通过避免了在金属栅极结构内的空隙形成以及层夹断(pinch-off),促进了经修改的沟槽122'内的更好的金属填充覆盖。最后,如图15所示,对金属栅极层124进行平面化,由此界定RMG形成的NFET器件106。
由此将理解,通过不与氮化物衬里的沉积同时进行UV固化也不在氮化物衬里的沉积之后立即进行UV固化,而是替代地首先至少进行氮化物层CMP和伪栅极去除,可以贯穿器件处理的剩余部分保持由UV固化提供的增强的应力益处。此外,通过在平面化/伪栅极去除之后并且在金属栅极填充之前进行UV固化,所得到的氮化物层和沟槽的体积收缩和梯形轮廓导致更好的金属填充条件。
尽管已经参考一个或多个优选实施例描述了本发明,但是本领域技术人员将理解,在不脱离本发明的范围的情况下,可以进行各种变换并且等效物可以用于替代其要素。此外,在不脱离本发明的实质范围的情况下,可以进行很多修改以使特定情况或材料适应本发明的教导。因此,本发明旨在不限于作为为了执行本发明而预期的最佳模式被公开的特定实施例,而是本发明将包括落入所附权利要求的范围内的所有实施例。
Claims (21)
1.一种形成半导体结构的方法,所述方法包括:
在设置于衬底之上的一个或多个部分完成的场效应晶体管(FET)器件之上形成应力诱导层,所述一个或多个部分完成的FET器件包括牺牲伪栅极结构;
对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构;以及
在对所述应力诱导层进行平面化并且去除所述牺牲伪栅极结构之后,进行对所述应力诱导层的紫外(UV)固化,以增强由所述应力诱导层最初施加在所述一个或多个部分完成的FET器件的沟道区上的应力的值。
2.权利要求1所述的方法,其中,所述应力诱导层包括拉伸氮化物层,并且所述一个或多个部分完成的FET器件包括n型FET(NFET)器件。
3.权利要求2所述的方法,还包括:用一个或多个金属栅极层填充通过去除所述牺牲伪栅极结构而界定的沟槽。
4.权利要求3所述的方法,还包括:对所述一个或多个金属栅极层进行平面化。
5.权利要求3所述的方法,其中,在填充所述沟槽并且对所述一个或多个金属栅极层进行平面化之后进行所述UV固化。
6.权利要求3所述的方法,其中,在用所述一个或多个金属栅极层填充所述沟槽之前进行所述UV固化,以使得所述应力诱导层和所述沟槽呈现梯形轮廓。
7.权利要求6所述的方法,其中,所述沟槽的所述梯形轮廓使得所述沟槽在其底端较窄并且在其顶端较宽。
8.权利要求3所述的方法,还包括:
在用所述一个或多个金属栅极层填充之前在所述沟槽中形成替代的高介电常数(高k)层。
9.权利要求1所述的方法,其中,所述应力诱导层是拉伸氮化物层,所述FET器件是n型场效应晶体管(NFET)器件,并且所述伪栅极结构是多晶硅牺牲伪栅极结构;
并且其中,所述方法还包括,在对所述拉伸氮化物层进行平面化并且去除所述伪栅极结构之后:
用一个或多个金属栅极层填充通过去除所述多晶硅牺牲伪栅极结构而界定的沟槽;以及
对所述一个或多个金属栅极层进行平面化。
10.权利要求9所述的方法,其中,所述拉伸氮化物层包括氮化硅层。
11.权利要求10所述的方法,其中,由所述拉伸氮化物层最初施加的应力在约0.7吉帕斯卡(GPa)的量级,并且增强的拉伸应力值在约1.6GPa的量级。
12.权利要求9所述的方法,其中,所述一个或多个金属栅极层包含氮化钛、氮化钽、钛铝、氮化钛铝、钽铝、氮化钽铝、铪硅合金、氮化铪以及碳化钽中的一种或多种。
13.权利要求9所述的方法,还包括:
在用所述一个或多个金属栅极层填充之前在所述沟槽中形成替代的高介电常数(高k)层,所述高k层包含具有SiO2界面层的氧化铪(HfO2);以及
对所述高k层进行退火以使其致密化。
14.权利要求9所述的方法,其中在所述UV固化之后进行所述填充沟槽和对所述一个或多个金属栅极层的平面化。
15.权利要求14所述的方法,其中,所述UV固化导致所述拉伸氮化物层和所述沟槽呈现梯形轮廓。
16.权利要求15所述的方法,其中,所述沟槽的所述梯形轮廓使得所述沟槽在其底端较窄并且在其顶端较宽。
17.一种半导体结构,包括:
设置于衬底之上的多个n型场效应晶体管(NFET)器件;
形成在所述衬底之上并且位于所述NFET器件的栅极结构之间的紫外(UV)固化的拉伸氮化物层,其中部分所述UV固化的拉伸氮化物层具有梯形轮廓,该梯形轮廓的底端宽于该梯形轮廓的顶端;以及
所述NFET器件的所述栅极结构,其也具有梯形轮廓,该梯形轮廓的顶端宽于该梯形轮廓的底端。
18.权利要求17所述的结构,其中,所述拉伸氮化物层包括氮化硅层。
19.权利要求17所述的结构,其中,拉伸氮化物层提供约1.6吉帕斯卡(GPa)量级的拉伸应力。
20.权利要求17所述的结构,其中,所述栅极结构包括金属栅极结构。
21.权利要求20所述的结构,其中,所述金属栅极结构包含氮化钛、氮化钽、钛铝、氮化钛铝、钽铝、氮化钽铝、铪硅合金、氮化铪以及碳化钽中的一种或多种。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/103,149 | 2011-05-09 | ||
US13/103,149 US8421132B2 (en) | 2011-05-09 | 2011-05-09 | Post-planarization UV curing of stress inducing layers in replacement gate transistor fabrication |
PCT/IB2012/050847 WO2012153201A1 (en) | 2011-05-09 | 2012-02-24 | Preserving stress benefits of uv curing in replacement gate transistor fabrication |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103620748A true CN103620748A (zh) | 2014-03-05 |
CN103620748B CN103620748B (zh) | 2016-06-22 |
Family
ID=47138851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201280022389.9A Expired - Fee Related CN103620748B (zh) | 2011-05-09 | 2012-02-24 | 保留替代栅极晶体管制造中的uv固化的应力益处 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8421132B2 (zh) |
JP (1) | JP5657176B2 (zh) |
CN (1) | CN103620748B (zh) |
DE (1) | DE112012001089B4 (zh) |
GB (1) | GB2503848B (zh) |
WO (1) | WO2012153201A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105336588A (zh) * | 2014-05-29 | 2016-02-17 | 中芯国际集成电路制造(上海)有限公司 | 半导体器件的形成方法 |
CN105789299A (zh) * | 2014-10-06 | 2016-07-20 | 台湾积体电路制造股份有限公司 | 具有栅极堆叠件的半导体器件的结构和形成方法 |
CN107170684A (zh) * | 2016-03-08 | 2017-09-15 | 中芯国际集成电路制造(上海)有限公司 | 鳍式场效应晶体管的形成方法 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8765561B2 (en) * | 2011-06-06 | 2014-07-01 | United Microelectronics Corp. | Method for fabricating semiconductor device |
US8658487B2 (en) * | 2011-11-17 | 2014-02-25 | United Microelectronics Corp. | Semiconductor device and fabrication method thereof |
US8803249B2 (en) * | 2012-08-09 | 2014-08-12 | Taiwan Semiconductor Manufacturing Co., Ltd. | Profile pre-shaping for replacement poly gate interlayer dielectric |
US9293466B2 (en) * | 2013-06-19 | 2016-03-22 | Taiwan Semiconductor Manufacturing Company, Ltd. | Embedded SRAM and methods of forming the same |
US9520474B2 (en) * | 2013-09-12 | 2016-12-13 | Taiwan Semiconductor Manufacturing Company Limited | Methods of forming a semiconductor device with a gate stack having tapered sidewalls |
CN104637797A (zh) * | 2013-11-12 | 2015-05-20 | 中国科学院微电子研究所 | 一种后栅工艺中ild层的处理方法 |
CN104681597A (zh) * | 2013-11-28 | 2015-06-03 | 中国科学院微电子研究所 | 半导体器件及其制造方法 |
US9312174B2 (en) * | 2013-12-17 | 2016-04-12 | United Microelectronics Corp. | Method for manufacturing contact plugs for semiconductor devices |
CN105225949B (zh) * | 2014-05-26 | 2018-08-21 | 中芯国际集成电路制造(上海)有限公司 | 一种半导体器件的制造方法和电子装置 |
US10068982B2 (en) * | 2014-05-29 | 2018-09-04 | Taiwan Semiconductor Manufacturing Co., Ltd | Structure and formation method of semiconductor device structure with metal gate |
KR102224386B1 (ko) * | 2014-12-18 | 2021-03-08 | 삼성전자주식회사 | 집적 회로 장치의 제조 방법 |
US9553090B2 (en) | 2015-05-29 | 2017-01-24 | Taiwan Semiconductor Manufacturing Company, Ltd. | Structure and formation method of semiconductor device structure |
US10147649B2 (en) * | 2016-05-27 | 2018-12-04 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device structure with gate stack and method for forming the same |
US10020401B2 (en) * | 2016-11-29 | 2018-07-10 | Taiwan Semiconductor Manufacturing Company, Ltd. | Methods for straining a transistor gate through interlayer dielectric (ILD) doping schemes |
US9786754B1 (en) * | 2017-02-06 | 2017-10-10 | Vanguard International Semiconductor Corporation | Method for forming semiconductor device structure |
CN109585293B (zh) * | 2017-09-29 | 2021-12-24 | 台湾积体电路制造股份有限公司 | 切割金属工艺中的基脚去除 |
EP4010927A1 (en) | 2019-08-09 | 2022-06-15 | Hitachi Energy Switzerland AG | Strain enhanced sic power semiconductor device and method of manufacturing |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030075745A (ko) * | 2002-03-20 | 2003-09-26 | 삼성전자주식회사 | 반도체 소자의 금속게이트 형성방법 |
US20070278589A1 (en) * | 2006-06-01 | 2007-12-06 | Nobuyuki Tamura | Semiconductor device and fabrication method thereof |
US20080102571A1 (en) * | 2006-10-25 | 2008-05-01 | James Pan | Methods for fabricating a stress enhanced mos transistor |
WO2008096587A1 (ja) * | 2007-02-07 | 2008-08-14 | Nec Corporation | 半導体装置 |
US20080305600A1 (en) * | 2007-06-05 | 2008-12-11 | Hsiu-Lien Liao | Method and apparatus for fabricating high tensile stress film |
JP2008306132A (ja) * | 2007-06-11 | 2008-12-18 | Renesas Technology Corp | 半導体装置の製造方法 |
CN101641780A (zh) * | 2007-03-20 | 2010-02-03 | 索尼株式会社 | 半导体器件及其制造方法 |
CN101866859A (zh) * | 2010-07-07 | 2010-10-20 | 北京大学 | 一种沟道应力引入方法及采用该方法制备的场效应晶体管 |
US20110049640A1 (en) * | 2009-08-31 | 2011-03-03 | Frank Feustel | Superior fill conditions in a replacement gate approach by using a tensile stressed overlayer |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6033963A (en) | 1999-08-30 | 2000-03-07 | Taiwan Semiconductor Manufacturing Company | Method of forming a metal gate for CMOS devices using a replacement gate process |
US6465309B1 (en) | 2000-12-12 | 2002-10-15 | Advanced Micro Devices, Inc. | Silicide gate transistors |
KR20070069160A (ko) * | 2004-10-29 | 2007-07-02 | 어드밴스드 마이크로 디바이시즈, 인코포레이티드 | 서로 다른 스트레인드 채널 영역들을 갖는 반도체 영역들을포함하는 반도체 디바이스 및 이를 제조하는 방법 |
JP5091397B2 (ja) | 2005-10-27 | 2012-12-05 | パナソニック株式会社 | 半導体装置 |
US7510943B2 (en) * | 2005-12-16 | 2009-03-31 | Infineon Technologies Ag | Semiconductor devices and methods of manufacture thereof |
US7678630B2 (en) * | 2006-02-15 | 2010-03-16 | Infineon Technologies Ag | Strained semiconductor device and method of making same |
US20070281405A1 (en) | 2006-06-02 | 2007-12-06 | International Business Machines Corporation | Methods of stressing transistor channel with replaced gate and related structures |
US7842592B2 (en) | 2007-06-08 | 2010-11-30 | International Business Machines Corporation | Channel strain engineering in field-effect-transistor |
US7911001B2 (en) * | 2007-07-15 | 2011-03-22 | Samsung Electronics Co., Ltd. | Methods for forming self-aligned dual stress liners for CMOS semiconductor devices |
US20090035928A1 (en) * | 2007-07-30 | 2009-02-05 | Hegde Rama I | Method of processing a high-k dielectric for cet scaling |
DE102007046849B4 (de) | 2007-09-29 | 2014-11-06 | Advanced Micro Devices, Inc. | Verfahren zur Herstellung von Gateelektrodenstrukturen mit großem ε nach der Transistorherstellung |
US20090179308A1 (en) | 2008-01-14 | 2009-07-16 | Chris Stapelmann | Method of Manufacturing a Semiconductor Device |
JP5309619B2 (ja) * | 2008-03-07 | 2013-10-09 | ソニー株式会社 | 半導体装置およびその製造方法 |
JP5147471B2 (ja) * | 2008-03-13 | 2013-02-20 | パナソニック株式会社 | 半導体装置 |
JP2009277908A (ja) | 2008-05-15 | 2009-11-26 | Toshiba Corp | 半導体装置の製造方法及び半導体装置 |
US8293605B2 (en) * | 2011-02-25 | 2012-10-23 | GlobalFoundries, Inc. | Methods for fabricating a CMOS integrated circuit having a dual stress layer (DSL) |
-
2011
- 2011-05-09 US US13/103,149 patent/US8421132B2/en not_active Expired - Fee Related
-
2012
- 2012-02-24 DE DE112012001089.2T patent/DE112012001089B4/de not_active Expired - Fee Related
- 2012-02-24 JP JP2014509858A patent/JP5657176B2/ja not_active Expired - Fee Related
- 2012-02-24 GB GB1318709.1A patent/GB2503848B/en active Active
- 2012-02-24 WO PCT/IB2012/050847 patent/WO2012153201A1/en active Application Filing
- 2012-02-24 CN CN201280022389.9A patent/CN103620748B/zh not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030075745A (ko) * | 2002-03-20 | 2003-09-26 | 삼성전자주식회사 | 반도체 소자의 금속게이트 형성방법 |
US20070278589A1 (en) * | 2006-06-01 | 2007-12-06 | Nobuyuki Tamura | Semiconductor device and fabrication method thereof |
US20080102571A1 (en) * | 2006-10-25 | 2008-05-01 | James Pan | Methods for fabricating a stress enhanced mos transistor |
WO2008096587A1 (ja) * | 2007-02-07 | 2008-08-14 | Nec Corporation | 半導体装置 |
CN101641780A (zh) * | 2007-03-20 | 2010-02-03 | 索尼株式会社 | 半导体器件及其制造方法 |
US20080305600A1 (en) * | 2007-06-05 | 2008-12-11 | Hsiu-Lien Liao | Method and apparatus for fabricating high tensile stress film |
JP2008306132A (ja) * | 2007-06-11 | 2008-12-18 | Renesas Technology Corp | 半導体装置の製造方法 |
US20110049640A1 (en) * | 2009-08-31 | 2011-03-03 | Frank Feustel | Superior fill conditions in a replacement gate approach by using a tensile stressed overlayer |
CN101866859A (zh) * | 2010-07-07 | 2010-10-20 | 北京大学 | 一种沟道应力引入方法及采用该方法制备的场效应晶体管 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105336588A (zh) * | 2014-05-29 | 2016-02-17 | 中芯国际集成电路制造(上海)有限公司 | 半导体器件的形成方法 |
CN105336588B (zh) * | 2014-05-29 | 2019-01-22 | 中芯国际集成电路制造(上海)有限公司 | 半导体器件的形成方法 |
CN105789299A (zh) * | 2014-10-06 | 2016-07-20 | 台湾积体电路制造股份有限公司 | 具有栅极堆叠件的半导体器件的结构和形成方法 |
US10164049B2 (en) | 2014-10-06 | 2018-12-25 | Taiwan Semiconductor Manufacturing Company, Ltd. | Structure and formation method of semiconductor device with gate stack |
CN105789299B (zh) * | 2014-10-06 | 2020-05-08 | 台湾积体电路制造股份有限公司 | 具有栅极堆叠件的半导体器件的结构和形成方法 |
US10804371B2 (en) | 2014-10-06 | 2020-10-13 | Taiwan Semiconductor Manufacturing Co., Ltd. | Structure and formation method of semiconductor device with gate stack |
US11264484B2 (en) | 2014-10-06 | 2022-03-01 | Taiwan Semiconductor Manufacturing Co., Ltd. | Structure and formation method of semiconductor device with gate stack |
CN107170684A (zh) * | 2016-03-08 | 2017-09-15 | 中芯国际集成电路制造(上海)有限公司 | 鳍式场效应晶体管的形成方法 |
CN107170684B (zh) * | 2016-03-08 | 2020-05-08 | 中芯国际集成电路制造(上海)有限公司 | 鳍式场效应晶体管的形成方法 |
Also Published As
Publication number | Publication date |
---|---|
GB2503848A (en) | 2014-01-08 |
WO2012153201A1 (en) | 2012-11-15 |
GB201318709D0 (en) | 2013-12-04 |
US20120286375A1 (en) | 2012-11-15 |
JP5657176B2 (ja) | 2015-01-21 |
US8421132B2 (en) | 2013-04-16 |
DE112012001089B4 (de) | 2016-01-28 |
JP2014519192A (ja) | 2014-08-07 |
CN103620748B (zh) | 2016-06-22 |
DE112012001089T5 (de) | 2014-06-26 |
GB2503848B (en) | 2015-07-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103620748A (zh) | 保留替代栅极晶体管制造中的uv固化的应力益处 | |
US11626328B2 (en) | Strain enhancement for FinFETs | |
US9722082B2 (en) | Methods and apparatus for doped SiGe source/drain stressor deposition | |
CN105023840B (zh) | 具有凹陷沟道的应变半导体装置以及形成该装置的方法 | |
US20110269278A1 (en) | Stress Memorization with Reduced Fringing Capacitance Based on Silicon Nitride in MOS Semiconductor Devices | |
US8383500B2 (en) | Semiconductor device formed by a replacement gate approach based on an early work function metal | |
US20150084132A1 (en) | Silicon Nitride Layer Deposited at Low Temperature to Prevent Gate Dielectric Regrowth High-K Metal Gate Field Effect Transistors | |
CN103681502B (zh) | Cmos晶体管的形成方法 | |
CN101162734B (zh) | 半导体器件及其制造方法 | |
CN103107197A (zh) | 应力增强的半导体器件 | |
US8664057B2 (en) | High-K metal gate electrode structures formed by early cap layer adaptation | |
US8030148B2 (en) | Structured strained substrate for forming strained transistors with reduced thickness of active layer | |
US20150348830A1 (en) | Shallow trench isolation | |
CN103137490B (zh) | 半导体器件及其制造方法 | |
US20140264720A1 (en) | Method and Structure for Nitrogen-Doped Shallow-Trench Isolation Dielectric | |
CN106328501B (zh) | 半导体器件的制造方法 | |
US8198633B2 (en) | Stress transfer enhancement in transistors by a late gate re-crystallization | |
US8329526B2 (en) | Cap removal in a high-k metal gate electrode structure by using a sacrificial fill material | |
CN105990119B (zh) | 半导体器件制作方法、半导体器件及电子装置 | |
CN102738233B (zh) | 半导体器件及其制造方法 | |
CN103855092B (zh) | 半导体器件制造方法 | |
CN107046005A (zh) | 改善器件性能的方法 | |
CN103000522B (zh) | Nmos晶体管的制造方法 | |
TW201415559A (zh) | 電晶體的結構及其製作方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20190224 |
|
CF01 | Termination of patent right due to non-payment of annual fee |