JP2020074389A - ホウ素ドープゲルマニウムの濃度が高いトランジスタ - Google Patents
ホウ素ドープゲルマニウムの濃度が高いトランジスタ Download PDFInfo
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- JP2020074389A JP2020074389A JP2019189786A JP2019189786A JP2020074389A JP 2020074389 A JP2020074389 A JP 2020074389A JP 2019189786 A JP2019189786 A JP 2019189786A JP 2019189786 A JP2019189786 A JP 2019189786A JP 2020074389 A JP2020074389 A JP 2020074389A
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- germanium
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- 229910052732 germanium Inorganic materials 0.000 title claims abstract description 162
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 61
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims abstract description 71
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 125000006850 spacer group Chemical group 0.000 claims description 47
- 239000002019 doping agent Substances 0.000 claims description 33
- 239000004065 semiconductor Substances 0.000 claims description 29
- 239000000872 buffer Substances 0.000 abstract description 47
- 229910052751 metal Inorganic materials 0.000 abstract description 22
- 239000002184 metal Substances 0.000 abstract description 22
- 238000011065 in-situ storage Methods 0.000 abstract description 13
- 230000008021 deposition Effects 0.000 abstract description 12
- 230000003071 parasitic effect Effects 0.000 abstract description 3
- 230000000593 degrading effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 102
- 238000000034 method Methods 0.000 description 94
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- 238000010586 diagram Methods 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
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- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
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- 230000008901 benefit Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- SCCCLDWUZODEKG-UHFFFAOYSA-N germanide Chemical compound [GeH3-] SCCCLDWUZODEKG-UHFFFAOYSA-N 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
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- 235000012239 silicon dioxide Nutrition 0.000 description 4
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- 229910006137 NiGe Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 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
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- 238000007796 conventional method Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- TXFYZJQDQJUDED-UHFFFAOYSA-N germanium nickel Chemical compound [Ni].[Ge] TXFYZJQDQJUDED-UHFFFAOYSA-N 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
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- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
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- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- PCLURTMBFDTLSK-UHFFFAOYSA-N nickel platinum Chemical compound [Ni].[Pt] PCLURTMBFDTLSK-UHFFFAOYSA-N 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000000038 ultrahigh vacuum chemical vapour deposition Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 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
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XWCMFHPRATWWFO-UHFFFAOYSA-N [O-2].[Ta+5].[Sc+3].[O-2].[O-2].[O-2] Chemical class [O-2].[Ta+5].[Sc+3].[O-2].[O-2].[O-2] XWCMFHPRATWWFO-UHFFFAOYSA-N 0.000 description 1
- ILCYGSITMBHYNK-UHFFFAOYSA-N [Si]=O.[Hf] Chemical compound [Si]=O.[Hf] ILCYGSITMBHYNK-UHFFFAOYSA-N 0.000 description 1
- NSXCBNDGHHHVKT-UHFFFAOYSA-N [Ti].[Sr].[Ba] Chemical compound [Ti].[Sr].[Ba] NSXCBNDGHHHVKT-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- VKJLWXGJGDEGSO-UHFFFAOYSA-N barium(2+);oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[O-2].[Ti+4].[Ba+2] VKJLWXGJGDEGSO-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229940104869 fluorosilicate Drugs 0.000 description 1
- VTGARNNDLOTBET-UHFFFAOYSA-N gallium antimonide Chemical compound [Sb]#[Ga] VTGARNNDLOTBET-UHFFFAOYSA-N 0.000 description 1
- 150000002290 germanium Chemical class 0.000 description 1
- 150000002291 germanium compounds Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-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
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- BCCOBQSFUDVTJQ-UHFFFAOYSA-N octafluorocyclobutane Chemical compound FC1(F)C(F)(F)C(F)(F)C1(F)F BCCOBQSFUDVTJQ-UHFFFAOYSA-N 0.000 description 1
- 235000019407 octafluorocyclobutane Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- KJXBRHIPHIVJCS-UHFFFAOYSA-N oxo(oxoalumanyloxy)lanthanum Chemical compound O=[Al]O[La]=O KJXBRHIPHIVJCS-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N oxygen(2-);yttrium(3+) Chemical class [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- XRFHCHCLSRSSPQ-UHFFFAOYSA-N strontium;oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[O-2].[Ti+4].[Sr+2] XRFHCHCLSRSSPQ-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0657—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body
- H01L29/0665—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body the shape of the body defining a nanostructure
- H01L29/0669—Nanowires or nanotubes
- H01L29/0676—Nanowires or nanotubes oriented perpendicular or at an angle to a substrate
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42356—Disposition, e.g. buried gate electrode
- H01L29/4236—Disposition, e.g. buried gate electrode within a trench, e.g. trench gate electrode, groove gate electrode
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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
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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
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- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28525—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising semiconducting material
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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
- H01L21/31—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
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
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Abstract
Description
公知であるが、金属酸化膜半導体(MOS)トランジスタは、短チャネル効果(SCE)を改善しつつトランジスタの総抵抗を低減するように設計されているソース先端領域およびドレイン先端領域を含むとしてよい。従来技術によると、これらの先端領域は、基板のうち、ホウ素または炭素等のドーパントが注入拡散処理を利用して注入される部分である。ソース先端領域は、ソース領域とチャネル領域との間の領域に形成される。同様に、ドレイン先端領域は、ドレイン領域とチャネル領域との間の領域に形成される。このような従来の処理技術で得られる先端領域は、トランジスタのゲート誘電体層の下方での拡散の程度が最小限に抑えられている。
図2は、本発明の実施形態に係る、自己整合しているソースエピ先端部およびドレインエピ先端部を持つMOSトランジスタを構築する方法200を示す図である。図3Aから図3Jは、方法200を実行した場合に、一部の実施形態に応じて形成される構造の例を示す図である。
公知であるが、フィンFETは、半導体材料から成る薄い長尺形状部材(一般的には、フィンと呼ばれる)の周囲を取り囲むように構築されるトランジスタである。当該トランジスタは、標準的な電界効果トランジスタ(FET)ノード、例えば、ゲート、ゲート誘電体、ソース領域およびドレイン領域を含む。デバイスの導電チャネルは、ゲート誘電体の下方にフィンの外側に設けられる。具体的には、電流は、フィンの側壁(基板表面に対して垂直な面)およびフィンの上部(基板表面に平行な面)の両方に沿って流れる。この構成の導電チャネルは実質的に、フィンの外側領域、平坦領域、つまり、3つの異なる領域に沿って設けられるので、このようなフィンFET構成は、トライゲートフィンFETと呼ばれることもある。他の種類のフィンFET構成もまた利用可能であり、例えば、いわゆるダブルゲートフィンFETも利用され得る。ダブルゲートフィンFETでは、導電チャネルは主に、フィンの2つの側壁に沿ってのみ(フィンの上部に沿っては設けられてない)設けられる。
Claims (22)
- 半導体領域の上方に位置するゲート電極であって、前記ゲート電極と前記半導体領域との間にはゲート誘電体層があり、前記ゲート電極の両端にはゲートスペーサがある、ゲート電極と、
ソース領域凹部およびドレイン領域凹部であって、両方とも前記半導体領域に隣接しており、これにより、前記半導体領域が前記ソース領域凹部と前記ドレイン領域凹部との間にあり、前記ソース領域凹部および前記ドレイン領域凹部のそれぞれは、主要部分と、前記ゲートスペーサのうち対応する1つの下方に延伸する先端部分とを含む、ソース領域凹部およびドレイン領域凹部と、
前記主要部分および前記先端部分に位置するゲルマニウム含有層であって、前記ゲルマニウム含有層は、前記先端部分において50原子パーセントを超えるゲルマニウム濃度を有し、前記先端部分における前記ゲルマニウム濃度は、前記主要部分の少なくとも一部におけるゲルマニウム濃度より高い、ゲルマニウム含有層と
を備える集積回路。 - 前記ゲルマニウム含有層はさらに、前記先端部分において1E20cm−3を超えるドーパント濃度を有し、前記先端部分における前記ドーパント濃度は、前記主要部分の少なくとも一部における前記ドーパント濃度より高い、
請求項1に記載の集積回路。 - 前記ゲルマニウム含有層はさらに、前記先端部分において1E20cm−3を超えるホウ素濃度を有し、前記先端部分における前記ホウ素濃度は、前記主要部分の少なくとも一部における前記ホウ素濃度より高い、
請求項1に記載の集積回路。 - 前記ゲルマニウム含有層は、
ホウ素ドープシリコンゲルマニウム(SiGe)部分と、
前記ホウ素ドープSiGe部分上にホウ素ドープゲルマニウムキャップとを含む、
請求項1に記載の集積回路。 - 前記ホウ素ドープSiGe部分は、漸次変化するゲルマニウム濃度を有する、
請求項4に記載の集積回路。 - 前記ホウ素ドープSiGe部分は、漸次変化するホウ素濃度を有する、
請求項5に記載の集積回路。 - 前記ホウ素ドープゲルマニウムキャップは、95原子パーセントを超えるゲルマニウム濃度を有する、
請求項6に記載の集積回路。 - 前記ゲルマニウム含有層の前記先端部分は、95原子パーセントを超えるゲルマニウム濃度と、5E20cm−3を超えるドーパント濃度とを有する、
請求項1に記載の集積回路。 - 前記ゲルマニウム含有層の前記先端部分は、95原子パーセントを超えるゲルマニウム濃度と、5E20cm−3を超えるホウ素濃度とを有する、
請求項1に記載の集積回路。 - 前記ゲルマニウム含有層は、前記半導体領域の上方に延伸する、
請求項1に記載の集積回路。 - 前記ソース領域凹部における前記ゲルマニウム含有層の前記主要部分上にソースコンタクトと、前記ドレイン領域凹部における前記ゲルマニウム含有層の前記主要部分上にドレインコンタクトとをさらに備える
請求項1に記載の集積回路。 - 半導体フィンと、
前記半導体フィンの一部分上にあり、前記半導体フィンの複数の表面に隣接するゲート構造であって、前記ゲート構造は、ゲート誘電体と、ゲート電極と、ゲートスペーサとを含み、前記ゲート誘電体は、前記ゲート電極と前記半導体フィンの前記部分との間にあり、前記ゲートスペーサは、前記ゲート電極の両端に隣接する、ゲート構造と、
ソース領域およびドレイン領域であって、前記半導体フィンの前記部分は前記ソース領域と前記ドレイン領域との間にあり、前記ソース領域および前記ドレイン領域のそれぞれは、主要部分と、前記ゲートスペーサのうち対応する1つの下方に延伸する先端部分とを含む、ソース領域およびドレイン領域と、
前記主要部分および前記先端部分に位置するゲルマニウム含有層であって、前記ゲルマニウム含有層は、前記先端部分において50原子パーセントを超えるゲルマニウム濃度を有し、前記先端部分における前記ゲルマニウム濃度は、前記主要部分の少なくとも一部における前記ゲルマニウム濃度より高い、ゲルマニウム含有層と
を備える集積回路。 - 前記ゲルマニウム含有層はさらに、前記先端部分において1E20cm−3を超えるドーパント濃度を有し、前記先端部分における前記ドーパント濃度は、前記主要部分の少なくとも一部における前記ドーパント濃度より高い、
請求項12に記載の集積回路。 - 前記ゲルマニウム含有層はさらに、前記先端部分において1E20cm−3を超えるホウ素濃度を有し、前記先端部分における前記ホウ素濃度は、前記主要部分の少なくとも一部における前記ホウ素濃度より高い、
請求項12に記載の集積回路。 - 前記ゲルマニウム含有層は、
ホウ素ドープシリコンゲルマニウム(SiGe)部分と、
前記ホウ素ドープSiGe部分上にホウ素ドープゲルマニウムキャップとを含む、
請求項12に記載の集積回路。 - 前記ホウ素ドープSiGe部分は、漸次変化するゲルマニウム濃度を有する、
請求項15に記載の集積回路。 - 前記ホウ素ドープSiGe部分は、漸次変化するホウ素濃度を有する、
請求項16に記載の集積回路。 - 前記ホウ素ドープゲルマニウムキャップは、95原子パーセントを超えるゲルマニウム濃度を有する、
請求項17に記載の集積回路。 - 前記ゲルマニウム含有層の前記先端部分は、95原子パーセントを超えるゲルマニウム濃度と、5E20cm−3を超えるドーパント濃度とを有する、
請求項12に記載の集積回路。 - 前記ゲルマニウム含有層の前記先端部分は、95原子パーセントを超えるゲルマニウム濃度と、5E20cm−3を超えるホウ素濃度とを有する、
請求項12に記載の集積回路。 - 前記ゲルマニウム含有層は、半導体領域の上方に延伸する、
請求項12に記載の集積回路。 - 前記ソース領域の凹部における前記ゲルマニウム含有層の前記主要部分上にソースコンタクトと、前記ドレイン領域の凹部における前記ゲルマニウム含有層の前記主要部分上にドレインコンタクトとをさらに備える
請求項12に記載の集積回路。
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