KR20050074850A - 불균일하게 분포된 결정 영역을 갖는 유전막을 포함하는캐패시터 및 그 제조 방법 - Google Patents
불균일하게 분포된 결정 영역을 갖는 유전막을 포함하는캐패시터 및 그 제조 방법 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims description 24
- 229910000449 hafnium oxide Inorganic materials 0.000 claims description 23
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 claims description 23
- 239000007789 gas Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 14
- 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 10
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 10
- 230000001590 oxidative effect Effects 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 7
- 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 6
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001936 tantalum oxide Inorganic materials 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 238000000231 atomic layer deposition Methods 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 4
- 229920005591 polysilicon Polymers 0.000 claims description 4
- -1 tungsten nitride Chemical class 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000457 iridium oxide 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
- 229910001925 ruthenium oxide Inorganic materials 0.000 claims description 3
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 210000002381 plasma Anatomy 0.000 claims 6
- 238000000277 atomic layer chemical vapour deposition Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 32
- 239000010410 layer Substances 0.000 description 28
- 230000015556 catabolic process Effects 0.000 description 14
- 238000000151 deposition Methods 0.000 description 10
- 230000008021 deposition Effects 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005389 semiconductor device fabrication Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
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- H—ELECTRICITY
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Abstract
Description
Claims (19)
- 하부전극;상기 하부전극과 마주보는 상부전극; 및상기 하부전극과 상기 상부전극 사이에 형성되되, 상기 하부전극에 접하는 하부영역, 상기 상부전극에 접하는 상부영역 및 상기 하부영역과 상기 상부영역 사이에 위치하며 상기 하부영역 및 상기 상부영역 보다 적은 결정영역을 갖는 적어도 하나의 중간영역(middle region)을 갖는 유전막을 포함하는 캐패시터.
- 제 1 항에 있어서,상기 유전막은 하프늄 산화막, 알루미늄 산화막, 탄탈륨 산화막, 티타늄 산화막, 지르코늄 산화막, 란탄 산화막, (Bax, Sr1-x)TiO3막 및 Pb(Zr,Ti)O 3막으로 이루어지는 그룹에서 선택된 어느 하나 또는 조합으로 이루어지는 것을 특징으로 하는 캐패시터.
- 제 1 항에 있어서,상기 유전막의 중간영역 내의 불순물 농도는 상기 유전막의 하부영역 및 상기 유전막의 상부영역 내의 불순물 농도 보다 높은 것을 특징으로 하는 캐패시터.
- 제 1 항에 있어서,상기 유전막의 하부영역, 상기 유전막의 중간영역 및 상기 유전막의 상부영역은 하프늄 산화막으로 이루어지는 것을 특징으로 하는 캐패시터.
- 제 4 항에 있어서,상기 유전막의 중간영역 내의 불순물 농도는 상기 유전막의 하부영역 및 상기 유전막의 상부영역 내의 불순물 농도 보다 높은 것을 특징으로 하는 캐패시터.
- 제 1 항에 있어서,상기 하부전극 및 상기 상부전극은 티타늄막, 티타늄 질화막, 탄탈륨막, 탄탈륨 질화막, 텅스텐막, 텅스텐 질화막, 알루미늄막, 구리막, 루테늄막, 루테늄 산화막, 백금막, 이리듐막, 이리듐 산화막 및 폴리실리콘막 중에서 선택된 어느 하나 또는 조합으로 이루어지는 것을 특징으로 하는 캐패시터.
- 기판 상에 하부전극을 형성하고,상기 하부전극 상에 유전막을 형성하되, 상기 유전막은 상기 하부전극에 접하는 하부영역, 상기 상부전극에 접하는 상부영역 및 상기 하부영역과 상기 상부영역 사이에 위치하며 상기 하부영역 및 상기 상부영역 보다 적은 결정영역을 갖는 적어도 하나의 중간영역(middle region)을 갖고,상기 유전막 상에 상부전극을 형성하는 것을 포함하는 캐패시터의 제조 방법.
- 제 7 항에 있어서,상기 유전막은 하프늄 산화막, 알루미늄 산화막, 탄탈륨 산화막, 티타늄 산화막, 지르코늄 산화막, 란탄 산화막, (Bax, Sr1-x)TiO3막 및 Pb(Zr,Ti)O 3막으로 이루어지는 그룹에서 선택된 어느 하나 또는 조합으로 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 7 항에 있어서,상기 유전막은 원자층 증착법 또는 화학기상 증착법을 사용하여 형성하는 것을 특징으로 하는 캐패시터의 제조방법.
- 제 7 항에 있어서,상기 유전막의 중간영역 내의 불순물 농도는 상기 유전막의 하부영역 및 상기 유전막의 상부영역 내의 불순물 농도 보다 높게 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 7 항에 있어서,상기 유전막의 하부영역, 상기 유전막의 중간영역 및 상기 유전막의 상부영역은 하프늄 산화막으로 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 9 항에 있어서,상기 유전막의 하부영역 및 상기 유전막의 상부영역은 산화기체로서 H2O, O3, O2 플라즈마 또는 N2O 플라즈마를 공급하여 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 9 항에 있어서,상기 유전막의 중간영역은 산화기체로서 O2를 공급하여 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 13 항에 있어서,상기 유전막의 중간영역을 형성한 후,산소를 포함하는 기체를 이용하여 큐어링을 실시하는 것을 더 포함하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 14 항에 있어서,상기 산소를 포함하는 기체는 O2, O3, N2O, O2 플라즈마, N 2O 플라즈마들 또는 이들의 조합인 것을 특징으로 하는 캐패시터의 제조방법.
- 제 7 항에 있어서,상기 유전막의 중간영역을 형성한 후,산소를 포함하는 기체를 이용하여 큐어링을 실시하는 것을 더 포함하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 16 항에 있어서,상기 산소를 포함하는 기체는 O2, O3, N2O, O2 플라즈마, N 2O 플라즈마들 또는 이들의 조합인 것을 특징으로 하는 캐패시터의 제조방법.
- 제 7 항에 있어서,상기 유전막의 중간영역 내의 불순물 농도는 상기 유전막의 하부영역 및 상기 유전막의 상부영역 내의 불순물 농도 보다 높게 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제 7 항에 있어서,상기 하부전극 및 상기 상부전극은 티타늄막, 티타늄 질화막, 탄탈륨막, 탄탈륨 질화막, 텅스텐막, 텅스텐 질화막, 알루미늄막, 구리막, 루테늄막, 루테늄 산화막, 백금막, 이리듐막, 이리듐 산화막 및 폴리실리콘막 중에서 선택된 어느 하나 또는 조합으로 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
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US11/032,150 US7002788B2 (en) | 2004-01-14 | 2005-01-11 | Capacitor including a dielectric layer having an inhomogeneous crystalline region and method of fabricating the same |
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US20060094185A1 (en) | 2006-05-04 |
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