KR20060004977A - 반도체 디바이스 제조 방법, cmos 트랜지스터 제조방법 및 반도체 디바이스 - Google Patents
반도체 디바이스 제조 방법, cmos 트랜지스터 제조방법 및 반도체 디바이스 Download PDFInfo
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- KR20060004977A KR20060004977A KR1020057020986A KR20057020986A KR20060004977A KR 20060004977 A KR20060004977 A KR 20060004977A KR 1020057020986 A KR1020057020986 A KR 1020057020986A KR 20057020986 A KR20057020986 A KR 20057020986A KR 20060004977 A KR20060004977 A KR 20060004977A
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- gate electrode
- metal layer
- semiconductor device
- metal
- oxide
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 182
- 239000002184 metal Substances 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 70
- 239000004065 semiconductor Substances 0.000 title claims abstract description 42
- 239000012535 impurity Substances 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 32
- 238000004519 manufacturing process Methods 0.000 claims description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 10
- 239000000460 chlorine Substances 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 9
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 239000010955 niobium Substances 0.000 claims description 7
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052794 bromium Inorganic materials 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 229910052735 hafnium Inorganic materials 0.000 claims description 5
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910052706 scandium Inorganic materials 0.000 claims description 5
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 238000000277 atomic layer chemical vapour deposition Methods 0.000 claims description 4
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 4
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 4
- -1 lanthanide metals Chemical class 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- XWCMFHPRATWWFO-UHFFFAOYSA-N [O-2].[Ta+5].[Sc+3].[O-2].[O-2].[O-2] Chemical compound [O-2].[Ta+5].[Sc+3].[O-2].[O-2].[O-2] XWCMFHPRATWWFO-UHFFFAOYSA-N 0.000 claims description 3
- ILCYGSITMBHYNK-UHFFFAOYSA-N [Si]=O.[Hf] Chemical compound [Si]=O.[Hf] ILCYGSITMBHYNK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- VKJLWXGJGDEGSO-UHFFFAOYSA-N barium(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[Ti+4].[Ba+2] VKJLWXGJGDEGSO-UHFFFAOYSA-N 0.000 claims description 3
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 3
- 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 claims description 3
- 229910052763 palladium Inorganic materials 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- CZXRMHUWVGPWRM-UHFFFAOYSA-N strontium;barium(2+);oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[Ti+4].[Sr+2].[Ba+2] CZXRMHUWVGPWRM-UHFFFAOYSA-N 0.000 claims description 3
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 3
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 claims description 3
- RPEUFVJJAJYJSS-UHFFFAOYSA-N zinc;oxido(dioxo)niobium Chemical compound [Zn+2].[O-][Nb](=O)=O.[O-][Nb](=O)=O RPEUFVJJAJYJSS-UHFFFAOYSA-N 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 2
- 229910026551 ZrC Inorganic materials 0.000 claims description 2
- OTCHGXYCWNXDOA-UHFFFAOYSA-N [C].[Zr] Chemical compound [C].[Zr] OTCHGXYCWNXDOA-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 2
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 claims description 2
- 229910003468 tantalcarbide Inorganic materials 0.000 claims description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 2
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 150000002602 lanthanoids Chemical class 0.000 claims 1
- 229910052712 strontium Inorganic materials 0.000 claims 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims 1
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 238000000151 deposition Methods 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 238000005468 ion implantation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
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- 238000007792 addition Methods 0.000 description 2
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- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide 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
- 238000000137 annealing Methods 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- VTGARNNDLOTBET-UHFFFAOYSA-N gallium antimonide Chemical compound [Sb]#[Ga] VTGARNNDLOTBET-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 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
- 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
- 238000009413 insulation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 239000012702 metal oxide precursor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
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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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- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
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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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- H01L21/28079—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 single metal, e.g. Ta, W, Mo, Al
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- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823828—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823842—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different gate conductor materials or different gate conductor implants, e.g. dual gate structures
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Abstract
Description
Claims (30)
- 반도체 디바이스 제조 방법에 있어서,기판 상에 유전체층을 형성하는 단계와,상기 유전체층 상에 불순물을 함유하는 금속층을 형성하는 단계와,상기 불순물을 함유하는 금속층으로부터 금속 게이트 전극을 형성하는 단계를 포함하는반도체 디바이스 제조 방법.
- 제 1 항에 있어서,상기 유전체층은 하이-k 게이트 유전체층을 포함하는반도체 디바이스 제조 방법.
- 제 2 항에 있어서,상기 하이-k 게이트 유전체층은 원자층 화학 기상 증착에 의해 형성되고, 하프늄 산화물, 하프늄 실리콘 산화물, 란탄 산화물, 지르코늄 산화물, 지르코늄 실리콘 산화물, 티타늄 산화물, 탄탈 산화물, 바륨 스트론튬 티타늄 산화물, 바륨 티타늄 산화물, 스트론튬 티타늄 산화물, 이트륨 산화물, 알루미늄 산화물, 레드 스 칸듐 탄탈 산화물 및 레드 징크 니오브(lead zinc niobate)로 이루어진 그룹으로부터 선택된 재료를 포함하는반도체 디바이스 제조 방법.
- 제 1 항에 있어서,상기 불순물을 함유하는 금속층은 약 900℃를 넘는 온도에 견딜 수 있는반도체 디바이스 제조 방법.
- 제 2 항에 있어서,상기 불순물을 함유하는 금속층은 텅스텐, 백금, 루테늄, 팔라듐, 몰리브덴, 니오븀 및 이들의 합금, 금속 탄화물, 금속 질화물 및 도전성 금속 산화물로 이루어진 그룹으로부터 선택되는 재료를 포함하는반도체 디바이스 제조 방법.
- 제 5 항에 있어서,상기 불순물을 함유하는 금속층은 티타늄 탄화물, 지르코늄 탄화물, 탄탈 탄화물 및 텅스텐 탄화물, 티타늄 질화물, 탄탈 질화물 및 루테늄 산화물로 이루어진 그룹으로부터 선택되는 재료를 포함하는반도체 디바이스 제조 방법.
- 제 1 항에 있어서,상기 불순물을 포함하는 금속층은약 4.3 eV 내지 약 4.9 eV의 일함수를 갖는 금속층을 형성하는 단계와,상기 금속층의 일함수를 적어도 약 0.1 eV 만큼 이동시킬 수 있는 양의 원소를 상기 금속층에 첨가하는 단계를 통해 형성되는반도체 디바이스 제조 방법.
- 제 7 항에 있어서,상기 금속 게이트 전극은 NMOS 트랜지스터용 게이트 전극으로 작용하고, 상기 원소는 약 1.7보다 작은 전기음성도 값을 갖는반도체 디바이스 제조 방법.
- 제 8 항에 있어서,상기 원소는 란탄족 금속, 알칼리 금속, 알칼리 토금속(alkaline earth metal), 스칸듐, 지르코늄, 하프늄, 알루미늄, 티타늄, 탄탈, 니오븀 및 텅스텐으로 이루어진 그룹으로부터 선택되는반도체 디바이스 제조 방법.
- 제 9 항에 있어서,상기 원소는 알루미늄인반도체 디바이스 제조 방법.
- 제 7 항에 있어서,상기 금속 게이트 전극은 PMOS 트랜지스터용 게이트 전극으로 작용하고, 상기 원소는 약 2.8보다 큰 전기음성도를 갖는반도체 디바이스 제조 방법.
- 제 11 항에 있어서,상기 원소는 질소, 염소, 산소, 플루오르 및 브롬으로 이루어진 그룹으로부터 선택되는반도체 디바이스 제조 방법.
- 제 12 항에 있어서,상기 원소는 염소인반도체 디바이스 제조 방법.
- 제 7 항에 있어서,상기 원소는, 상기 불순물을 함유하는 금속층의 약 3 내지 약 50 원자 백분율이 될 때까지 상기 금속층에 첨가되는반도체 디바이스 제조 방법.
- CMOS 트랜지스터 제조 방법에 있어서,기판 상에 하이-k 게이트 유전체층을 형성하는 단계와,상기 하이-k 게이트 유전체층 상에 불순물을 함유하는 금속층을 형성하는 단계를 포함하되,상기 불순물을 함유하는 금속층의 제 1 부분은 상기 금속층의 일함수를 낮추기 위한 충분한 양의 제 1 원소를 포함하고, 상기 불순물을 함유하는 금속층의 제 2 부분은 상기 금속층의 일함수를 높이기 위한 충분한 양의 제 2 원소를 포함하는CMOS 트랜지스터 제조 방법.
- 제 15 항에 있어서,상기 불순물을 함유하는 금속층의 제 1 부분으로부터 NMOS 트랜지스터용의 게이트 전극을 형성하는 단계와,상기 불순물을 함유하는 금속층의 상기 제 2 부분으로부터 PMOS 트랜지스터용의 게이트 전극을 형성하는 단계를 더 포함하고,상기 제 1 원소는 약 1.7보다 작은 전기음성도 값을 가지며, 상기 제 2 원소는 약 2.8보다 더 큰 전기음성도 값을 갖는CMOS 트랜지스터 제조 방법.
- 제 15 항에 있어서,상기 불순물을 함유하는 금속층은약 4.3 eV 내지 약 4.9 eV의 일함수를 갖는 금속층을 형성하는 단계와,상기 금속층의 제 1 부분에, 상기 금속층의 일함수를 약 4.0 eV 내지 약 4.2 eV로 낮출 수 있는 양의 제 1 원소를 첨가하는 단계와,상기 금속층의 제 2 부분에, 상기 금속층의 일함수를 약 5.0 eV 내지 약 5.2 eV로 높일 수 있는 양의 제 2 원소를 첨가하는 단계를 통해 형성되는CMOS 트랜지스터 제조 방법.
- 제 17 항에 있어서,상기 제 1 원소는 상기 금속층의 제 2 부분이 마스킹되어 있는 동안에 상기 금속층의 제 1 부분에 첨가되고, 상기 제 2 원소는 상기 금속층의 제 1 부분이 마스킹되어 있는 동안에 상기 금속층의 제 2 부분에 첨가되는CMOS 트랜지스터 제조 방법.
- 제 18 항에 있어서,상기 제 1 원소는 란탄족 금속, 스칸듐, 지르코늄, 하프늄, 알루미늄, 티타늄, 탄탈, 니오븀 및 텅스텐으로 이루어지는 그룹으로부터 선택되고, 상기 제 2 원소는 질소, 염소, 산소, 플루오르 및 브롬으로 이루어지는 그룹으로부터 선택되는CMOS 트랜지스터 제조 방법.
- 제 19 항에 있어서,상기 제 1 원소는 상기 불순물을 함유하는 금속층의 상기 제 1 부분의 약 3 내지 약 50 원자 백분율이 될 때까지 상기 금속층에 첨가되고, 상기 제 2 원소는 상기 불순물을 함유하는 금속층의 상기 제 2 부분의 약 3 내지 약 50 원자 백분율이 될 때까지 상기 금속층에 첨가되는CMOS 트랜지스터 제조 방법.
- 반도체 디바이스에 있어서,기판 상에 형성된 유전체층과,상기 유전체층 상에 형성된 금속 게이트 전극을 포함하되,상기 금속 게이트 전극은 상기 금속 게이트 전극의 일함수를 적어도 약 0.1 eV 만큼 이동시킬 수 있는 양의 불순물을 포함하는반도체 디바이스.
- 제 21 항에 있어서,상기 유전체층은 하이-k 게이트 유전체층을 포함하는반도체 디바이스.
- 제 22 항에 있어서,상기 하이-k 게이트 유전체층은 원자층 화학 기상 증착에 의해 형성되고, 하프늄 산화물, 하프늄 실리콘 산화물, 란탄 산화물, 지르코늄 산화물, 지르코늄 실리콘 산화물, 티타늄 산화물, 탄탈 산화물, 바륨 스트론튬 티타늄 산화물, 바륨 티 타늄 산화물, 스트론튬 티타늄 산화물, 이트륨 산화물, 알루미늄 산화물, 레드 스칸듐 탄탈 산화물 및 레드 징크 니오브(lead zinc niobate)로 이루어진 그룹으로부터 선택된 재료를 포함하는반도체 디바이스.
- 제 21 항에 있어서,상기 금속 게이트 전극은 NMOS 트랜지스터용 게이트 전극으로 작용하고, 상기 불순물은 약 1.7보다 작은 전기음성도 값을 갖는 원소인반도체 디바이스.
- 제 24 항에 있어서,상기 원소는 란탄족 금속, 알칼리 금속, 알칼리 토금속(alkaline earth metal), 스칸듐, 지르코늄, 하프늄, 알루미늄, 티타늄, 탄탈, 니오븀 및 텅스텐으로 이루어진 그룹으로부터 선택되는반도체 디바이스.
- 제 21 항에 있어서,상기 금속 게이트 전극은 PMOS 트랜지스터용 게이트 전극으로 작용하고, 상기 불순물은 약 2.8보다 큰 전기음성도를 갖는 원소인반도체 디바이스.
- 제 26 항에 있어서,상기 원소는 질소, 염소, 산소, 플루오르 및 브롬으로 이루어진 그룹으로부터 선택되는반도체 디바이스.
- 제 21 항에 있어서,상기 불순물은 금속층의 약 3 내지 약 50 원자 백분율의 농도로 상기 금속 게이트 전극에 존재하는반도체 디바이스.
- 제 21 항에 있어서,상기 금속 게이트 전극은 제 1 금속 게이트 전극이며, 제 2 금속 게이트 전극을 더 포함하고,상기 제 1 금속 게이트 전극은 상기 제 1 금속 게이트 전극의 일함수를 적어도 약 0.1 eV 만큼 낮출 수 있는 양의 제 1 원소를 포함하고, 상기 제 2 금속 게이트 전극은 상기 제 2 금속 게이트 전극의 일함수를 적어도 약 0.1 eV 만큼 높일 수 있는 양의 제 2 원소를 포함하는반도체 디바이스.
- 제 29 항에 있어서,상기 제 1 금속 게이트 전극은 NMOS 트랜지스터용 게이트 전극으로서 작용하고,상기 제 1 원소는 약 1.7보다 작은 전기음성도 값을 가지며, 란탄 계열 원소, 스칸듐, 지르코늄, 하프늄, 알루미늄, 티타늄, 탄탈, 니오븀 및 텅스텐으로 이루어지는 그룹으로부터 선택되고, 약 3 내지 약 50 원자 백분율의 농도로 상기 제 1 금속 게이트 전극 내에 존재하고,상기 제 2 금속 게이트 전극은 PMOS 트랜지스터용 게이트 전극으로서 작용하며,상기 제 2 원소는 약 2.8보다 더 큰 전기음성도 값을 가지며, 질소, 염소, 산소, 플루오르 및 브롬으로 이루어진 그룹으로부터 선택되고, 약 3 내지 약 50 원자 백분율의 농도로 상기 제 2 금속 게이트 전극 내에 존재하는반도체 디바이스.
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KR100738711B1 (ko) | 2007-07-12 |
US6890807B2 (en) | 2005-05-10 |
CN1311527C (zh) | 2007-04-18 |
CN1551300A (zh) | 2004-12-01 |
WO2004105138A1 (en) | 2004-12-02 |
TW200425502A (en) | 2004-11-16 |
TWI234880B (en) | 2005-06-21 |
EP1620898A1 (en) | 2006-02-01 |
AU2003304143A1 (en) | 2004-12-13 |
US20040222474A1 (en) | 2004-11-11 |
US7420254B2 (en) | 2008-09-02 |
US20050158974A1 (en) | 2005-07-21 |
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