JP4982958B2 - 半導体装置とその製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 45
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 38
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 38
- 239000000758 substrate Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 33
- 239000007769 metal material Substances 0.000 claims description 11
- 239000007772 electrode material Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 100
- 239000013039 cover film Substances 0.000 description 13
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 229910052814 silicon oxide Inorganic materials 0.000 description 10
- 239000012535 impurity Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910021332 silicide Inorganic materials 0.000 description 8
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 8
- 108091006146 Channels Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005468 ion implantation Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 238000001259 photo etching Methods 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 1
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 1
- 229910005881 NiSi 2 Inorganic materials 0.000 description 1
- 108010075750 P-Type Calcium Channels Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76829—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76834—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers formation of thin insulating films on the sidewalls or on top of conductors
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- 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
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- 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
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- H10D84/01—Manufacture or treatment
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- 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
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- 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
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Description
ゲート電極材料にメタル材料を適用すると、従来適用していたポリシリコン材料に比べてゲート電極空乏化の抑制、ゲート電極抵抗の低減ができる。
2、112 素子分離領域、
3n、113n 第1の領域、
3p、113p 第2の領域、
116−1 第1の領域のコンタクトホール、
116−2 第2の領域のコンタクトホール、
117 層間絶縁膜、
118 p型ウェル領域、
119 第1の領域のソース・ドレイン、
119a 第1の領域のソース・ドレインの浅い接合領域、
119b 第1の領域のソース・ドレインの深い接合領域、
120 第1の領域のゲート絶縁膜、
121 第1の領域のゲート電極、
122 第1の領域および第2の領域のゲート電極側壁絶縁膜、
123 第1の領域のゲート積層体、
124 第1の領域のシリサイド膜(ソース・ドレイン領域)、
126 第1のシリコン窒化膜、
128 n型ウェル領域、
130 第2の領域のソース・ドレイン、
130a 第2の領域のソース・ドレインの浅い接合領域、
130b 第2の領域のソース・ドレインの深い接合領域、
131 第2の領域のゲート絶縁膜、
132 第2の領域のゲート電極、
134 第2の領域のゲート積層体、
135 第2の領域のシリサイド膜(ソース・ドレイン領域)、
138 第2のシリコン窒化膜、
140、143、150 レジスト膜、
144−1 第1の領域の開口部、
144−2 第1の領域の開口部、
Claims (5)
- 半導体基板と、
前記半導体基板に形成され、第1の導電型を有する第1の活性領域と、
前記第1の活性領域上に、第1のゲート絶縁膜を介して形成された第1のゲート電極と、
前記第1の活性領域中に形成され、第2の導電型を有する第1のソース領域及び第1のドレイン領域と、
前記第1のゲート絶縁膜及び前記第1のゲート電極の側面に接して形成された第1のゲート電極側壁絶縁膜と、
前記第1の活性領域、前記第1のゲート電極側壁絶縁膜及び前記第1のゲート電極の上に形成され、前記半導体基板の第1の方向に応力を印加する第1のシリコン窒化膜と、を有し、
前記半導体基板に形成され、前記第2の導電型を有する第2の活性領域と、
前記第2の活性領域上に第2のゲート絶縁膜を介して形成された第2のゲート電極と、
前記第2の活性領域中に形成され、前記第1の導電型を有する第2のソース領域及び第2のドレイン領域と、
前記第2のゲート電極の上面及び側面に接し、前記第2の活性領域上に形成され、前記半導体基板の前記第1の方向とは異なる第2の方向に応力を印加する第2のシリコン窒化膜と、を有し、
前記第1のゲート電極と前記第2のゲート電極とが、同一の金属材料からなるメタルゲート電極であることを特徴とする半導体装置。 - 前記第1の導電型がn型であり、
前記第2の導電型がp型であり、
前記第1のシリコン窒化膜は、前記半導体基板に対して圧縮応力を有し、
前記第2のシリコン窒化膜は、前記半導体基板に対して引張応力を有することを特徴とする請求項1に記載の半導体装置。 - 半導体基板に、第1の導電型を有する第1の活性領域を形成する工程と、
前記半導体基板に、第2の導電型を有する第2の活性領域を形成する工程と、
前記第1の活性領域及び前記第2の活性領域の上に、第1のゲート絶縁膜及び第2のゲート絶縁膜をそれぞれ形成する工程と、
前記第1のゲート絶縁膜及び前記第2のゲート絶縁膜の上に、第1の金属材料からなる第1のゲート電極及び前記第1の金属材料からなる第2のゲート電極をそれぞれ形成する工程と、
前記第1のゲート電極、前記第2のゲート電極、前記第1の活性領域及び前記第2の活性領域の上に第1の絶縁膜を形成する工程と、
前記第1の絶縁膜の一部をエッチング法により除去して、前記第1のゲート電極の側面及び前記第2のゲート電極の側面に、第1のゲート電極側壁絶縁膜及び第2のゲート電極側壁絶縁膜をそれぞれ形成する工程と、
前記第1のゲート電極及び前記第1のゲート電極側壁絶縁膜をマスクとして、前記第1の活性領域中に前記第2の導電型を有する第1の拡散層を形成する工程と、
前記第2のゲート電極及び前記第2のゲート電極側壁絶縁膜をマスクとして、前記第2の活性領域中に前記第1の導電型を有する第2の拡散層を形成する工程と、
前記第1のゲート電極、前記第2のゲート電極、前記第1のゲート電極側壁絶縁膜、前記第2のゲート電極側壁絶縁膜、前記第1の活性領域及び前記第2の活性領域の上に、前記半導体基板の第1の方向に応力を印加する第1のシリコン窒化膜を形成する工程と、
前記第1のゲート電極、前記第1のゲート電極側壁絶縁膜及び前記第1の活性領域の上に形成された前記第1のシリコン窒化膜を残しつつ、前記第2のゲート電極、前記第2のゲート電極側壁絶縁膜及び前記第2の活性領域の上に形成された前記第1のシリコン窒化膜を除去し、前記第2のゲート電極側壁絶縁膜を除去する工程と、
前記第2のゲート電極側壁絶縁膜を除去した後、前記第2のゲート電極、前記第2のゲート電極側壁絶縁膜、前記第2の活性領域の上及び残存した前記第1のシリコン窒化膜の上に、前記第2のゲート電極の上面及び側面に接して、前記半導体基板の前記第1の方向とは異なる第2の方向に応力を印加する第2のシリコン窒化膜を形成する工程と、
前記残存した前記第1のシリコン窒化膜上の前記第2のシリコン窒化膜の少なくとも一部を除去する工程と、
を有することを特徴とする半導体装置の製造方法。 - 前記第1の導電型がn型であり、
前記第2の導電型がp型であり、
前記第1のシリコン窒化膜は、前記半導体基板に対して圧縮応力を有し、
前記第2のシリコン窒化膜は、前記半導体基板に対して引張応力を有することを特徴とする請求項3に記載の半導体装置の製造方法。 - 前記第1のゲート電極及び前記第2のゲート電極を形成する工程は、
前記第1のゲート絶縁膜及び前記第2のゲート絶縁膜の上に、第1のダミー電極及び第2のダミー電極をそれぞれ形成する工程と、
前記第1のダミー電極、前記第2のダミー電極及び前記半導体基板の上に第2の絶縁膜を形成する工程と、
前記第2の絶縁膜の一部を研磨法により除去して、前記第1のダミー電極及び前記第2のダミー電極の上面を露出する工程と、
前記第1のダミー電極及び前記第2のダミー電極を除去して、第1の開口部及び第2の開口部をそれぞれ形成する工程と、
前記第1の開口部及び前記第2の開口部内にゲート電極材料をそれぞれ形成する工程と、
前記ゲート電極材料を形成する工程の後、前記第2の絶縁膜を除去する工程と、
を有することを特徴とする請求項3又は4に記載の半導体装置の製造方法。
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JP2005086002A JP4982958B2 (ja) | 2005-03-24 | 2005-03-24 | 半導体装置とその製造方法 |
US11/150,121 US7492014B2 (en) | 2005-03-24 | 2005-06-13 | Semiconductor device |
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JP2002217410A (ja) * | 2001-01-16 | 2002-08-02 | Hitachi Ltd | 半導体装置 |
JP4557508B2 (ja) * | 2003-06-16 | 2010-10-06 | パナソニック株式会社 | 半導体装置 |
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US7223647B2 (en) * | 2004-11-05 | 2007-05-29 | Taiwan Semiconductor Manufacturing Company | Method for forming integrated advanced semiconductor device using sacrificial stress layer |
US7445978B2 (en) * | 2005-05-04 | 2008-11-04 | Chartered Semiconductor Manufacturing, Ltd | Method to remove spacer after salicidation to enhance contact etch stop liner stress on MOS |
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