KR102056312B1 - 고유전율 절연막이 구비된 저마늄 반도체 소자 및 이의 제조방법 - Google Patents
고유전율 절연막이 구비된 저마늄 반도체 소자 및 이의 제조방법 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 24
- 238000000034 method Methods 0.000 title claims description 23
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims abstract description 151
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 150
- 238000003949 trap density measurement Methods 0.000 claims abstract description 21
- 230000005527 interface trap Effects 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims description 55
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 49
- 229910052739 hydrogen Inorganic materials 0.000 claims description 49
- 239000001257 hydrogen Substances 0.000 claims description 49
- 229910052727 yttrium Inorganic materials 0.000 claims description 42
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 42
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 34
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 34
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 28
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 claims description 28
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 6
- 229910052805 deuterium Inorganic materials 0.000 claims description 6
- 239000010408 film Substances 0.000 description 112
- 238000002484 cyclic voltammetry Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 238000004549 pulsed laser deposition Methods 0.000 description 2
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
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- 238000003917 TEM image Methods 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
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- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- 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]
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- H01L29/78—
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- 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
- H01L21/02172—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides
- H01L21/02175—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal
- H01L21/02189—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 at least one metal element, e.g. metal oxides, metal nitrides, metal oxynitrides or metal carbides characterised by the metal the material containing zirconium, e.g. ZrO2
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02524—Group 14 semiconducting materials
- H01L21/02532—Silicon, silicon germanium, germanium
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- 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
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
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- 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
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- 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
- H10D64/68—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator
- H10D64/691—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes characterised by the insulator, e.g. by the gate insulator comprising metallic compounds, e.g. metal oxides or metal silicates
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Abstract
Description
도 2는 본 발명의 일 실시예에 따라 제조된 저마늄 반도체 소자의 C-V 측정 결과를 도시한 도면이며,
도 3은 본 발명의 일 실시예에 따라 제조된 저마늄 반도체 소자의 유전상수 값 및 EOT를 도시한 도면이며,
도 4는 본 발명의 일 실시예에 따라 제조된 저마늄 반도체 소자의 C-V 측정 결과로부터 산출된 히스테리시스(hysteresis) 크기를 도시한 도면이며,
도 5는 본 발명의 일 실시예에 따라 제조된 저마늄 반도체 소자의 C-V 측정 결과 및 C-V 측정 결과로부터 산출된 계면트랩밀도(Dit)를 도시한 도면이며,
도 6은 본 발명의 일 실시예에 따라 제조된 저마늄 반도체 소자의 전계 크기에 따른 게이트 누설 전류를 도시한 도면이다.
Claims (13)
- 저마늄(Ge) 채널; 및
상기 저마늄 채널상 위치하는 절연막;
을 포함하되,
상기 절연막의 유전상수는 40 내지 60이며, 저마늄 채널을 이루는 저마늄의 에너지 밴드갭의 중심(Ei, eV)을 기준으로 Ei -0.2 eV ~ Ei + 0.2 eV의 범위에서, 1x1011 내지 8x1011(eV-1cm-2)의 계면트랩밀도(Dit)를 갖는 저마늄 반도체 소자. - 제 1항에 있어서,
상기 절연막은 상기 저마늄 채널과 접하여 위치하는 저마늄 산화물막; 및 상기 저마늄 산화물 막상 위치하는 이트륨 함유 지르코늄 산화물의 고유전막;을 포함하는 저마늄 반도체 소자. - 제 2항에 있어서,
저마늄 산화물막의 두께는 0.1 내지 1nm인 저마늄 반도체 소자. - 제 2항에 있어서,
상기 고유전막은 3 내지 6 원자%(atomic%) 이트륨을 함유하는 저마늄 반도체 소자. - 제 2항에 있어서,
상기 고유전막의 두께는 1 내지 30nm인 저마늄 반도체 소자. - 제 1항에 있어서,
상기 절연막은 가압 수소 열처리된 저마늄 반도체 소자. - 제 1항에 있어서,
상기 반도체 소자는 상기 저마늄 채널을 사이에 두고 서로 이격된 소스와 드레인을 더 포함하는 저마늄 반도체 소자. - a) 저마늄 산화물막이 형성된 저마늄 채널 상, 이트륨 함유 지르코늄 산화물막을 형성하여 절연막을 제조하는 단계; 및
b) 상기 절연막을 가압 수소 열처리하는 단계;를 포함하는 저마늄 반도체 소자의 제조방법.
- 삭제
- 제 8항에 있어서,
상기 가압 수소 열처리는 적어도 90부피% 이상의 수소 또는 중수소에 의한 가압 열처리인 저마늄 반도체 소자의 제조방법. - 제 8항에 있어서,
상기 가압 수소 열처리시 압력은 2 내지 30 atm인 저마늄 반도체 소자의 제조방법. - 제 11항에 있어서,
상기 가압 수소 열처리시 압력은 15 내지 30 atm인 저마늄 반도체 소자의 제조방법. - 제 10항에 있어서,
상기 가압 수소 열처리시 열처리 온도는 300 내지 500℃인 저마늄 반도체 소자의 제조방법.
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