KR100584996B1 - 산화하프늄과 산화알루미늄이 혼합된 유전막을 갖는캐패시터 및 그 제조 방법 - Google Patents
산화하프늄과 산화알루미늄이 혼합된 유전막을 갖는캐패시터 및 그 제조 방법 Download PDFInfo
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- KR100584996B1 KR100584996B1 KR1020030083399A KR20030083399A KR100584996B1 KR 100584996 B1 KR100584996 B1 KR 100584996B1 KR 1020030083399 A KR1020030083399 A KR 1020030083399A KR 20030083399 A KR20030083399 A KR 20030083399A KR 100584996 B1 KR100584996 B1 KR 100584996B1
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- 239000003990 capacitor Substances 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 229910000449 hafnium oxide Inorganic materials 0.000 title claims abstract description 15
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 title claims abstract description 15
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 134
- 239000010408 film Substances 0.000 claims abstract description 132
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000008021 deposition Effects 0.000 claims abstract description 19
- 239000010409 thin film Substances 0.000 claims abstract description 8
- 238000010926 purge Methods 0.000 claims description 39
- 238000000151 deposition Methods 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 17
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 14
- 229920005591 polysilicon Polymers 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 229910052735 hafnium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 11
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 230000006866 deterioration Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000012212 insulator Substances 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000005001 laminate film Substances 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000012495 reaction gas Substances 0.000 description 4
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 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
- 230000007547 defect Effects 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000010574 gas phase reaction Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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Abstract
Description
Claims (23)
- 삭제
- 하부전극, 유전막 및 상부전극의 순서로 적층된 캐패시터에 있어서,상기 유전막은 상기 상부전극 또는 상기 하부전극과 접하는 부분에서 산화하프늄과 산화알루미늄이 혼합된 유전막을 포함하되, 상기 산화하프늄과 산화알루미늄은 단원자증착법으로 증착된 단원자 박막인을 특징으로 하는 캐패시터.
- 제2항에 있어서,상기 산화하프늄은 HfO2이고, 상기 산화알루미늄은 Al2O3이며, 상기 유전막은 HfO2와 Al2O3이 혼합된 (HfO2)1-x(Al2 O3)x인 것을 특징으로 하는 캐패시터.
- 제3항에 있어서,상기 HfO2과 상기 Al2O3은 각각 1Å∼5Å 두께인 것을 특징으로 하는 캐패시터.
- 제3항에 있어서,상기 (HfO2)1-x(Al2O3)x에서,상기 Al2O3이 차지하는 조성(x)이 0.3∼0.6인 것을 특징으로 하는 캐패시터.
- 제2항에 있어서,상기 하부전극과 상기 상부전극은,폴리실리콘, TiN, Ru, RuO2, Pt, Ir 또는 IrO2 중에서 선택되는 것을 특징으로 하는 캐패시터.
- 제2항에 있어서,상기 유전막이 상기 하부전극에 접하고, 상기 유전막과 상기 상부전극 사이에 산화알루미늄과 산화하프늄의 순서로 적층된 적층막이 삽입된 것을 특징으로 하는 캐패시터.
- 제7항에 있어서,상기 상부전극과 상기 적층막 사이에 상기 유전막이 하나 더 삽입된 것을 특징으로 하는 캐패시터.
- 삭제
- 폴리실리콘으로 된 하부전극;폴리실리콘으로 된 상부전극; 및상기 상부전극과 상기 하부전극 사이에 형성되며 상기 상부전극 또는 상기 하부전극과 접하는 부분에서 산화하프늄과 산화알루미늄이 혼합된 유전막을 포함하되, 상기 산화하프늄과 산화알루미늄은 단원자증착법으로 증착된 단원자 박막인을 특징으로 하는 캐패시터.
- 제10항에 있어서,상기 산화하프늄은 HfO2이고, 상기 산화알루미늄은 Al2O3이며, 상기 유전막은 HfO2와 Al2O3이 혼합된 (HfO2)1-x(Al2 O3)x인 것을 특징으로 하는 캐패시터.
- 제11항에 있어서,상기 HfO2과 상기 Al2O3은 각각 1Å∼5Å 두께인 것을 특징으로 하는 캐패시터.
- 제11항에 있어서,상기 (HfO2)1-x(Al2O3)x에서,상기 Al2O3이 차지하는 조성(x)이 0.3∼0.6인 것을 특징으로 하는 캐패시터.
- 삭제
- 삭제
- 하부전극을 형성하는 단계;상기 하부전극 상에 단원자증착법을 이용하여 산화하프늄과 산화알루미늄이 혼합된 유전막을 형성하는 단계; 및상기 혼합 유전막 상에 상부전극을 형성하는 단계를 포함하되,상기 혼합 유전막을 형성하는 단계는,하프늄소스 공급, 퍼지, 산화원 공급 및 퍼지로 구성되는 제1사이클을 반복진행하여 HfO2를 형성하는 단계;알루미늄소스 공급, 퍼지, 산화원 공급 및 퍼지로 구성되는 제2사이클을 반복진행하여 Al2O3를 형성하는 단계; 및상기 제1사이클과 상기 제2사이클을 혼합한 제3사이클을 반복진행하여 HfO2와 Al2O3가 혼합된 (HfO2)1-x(Al2O3)x을 형성하는 단계를 포함하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제16항에 있어서,상기 제1사이클에서,상기 하프늄소스는 HfCl4, Hf(NO3)4, Hf(NCH2C2 H5)4 및 Hf(OC2H5)4 중에서 선택된 하나의 소스를 이용하고, 상기 산화원은 O3 또는 H2O 산소 플라즈마를 이용하며, 상기 퍼지를 위한 가스는 질소 또는 아르곤을 이용하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제16항에 있어서,상기 제2사이클에서,상기 알루미늄소스는 TMA 또는 MTMA를 이용하고, 상기 산화원은 O3 또는 H2O 산소 플라즈마를 이용하며, 상기 퍼지를 위한 가스는 질소 또는 아르곤을 이용하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제16항에 있어서,상기 (HfO2)1-x(Al2O3)x에서 상기 Al2 O3가 차지하는 조성 x가 0.3∼0.6가 되는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제16항에 있어서,상기 HfO2과 상기 Al2O3은 각각 1Å∼5Å 두께로 형성되는 것을 특징으로 하는 캐패시터의 제조 방법.
- 하부전극을 형성하는 단계;상기 하부전극 상에 단원자증착법을 이용하여 산화하프늄과 산화알루미늄이 혼합된 유전막을 형성하는 단계; 및상기 혼합 유전막 상에 상부전극을 형성하는 단계를 포함하되,상기 혼합 유전막을 형성하는 단계는,하프늄소스와 알루미늄소스가 혼합된 소스가스 공급, 퍼지, 산화원 공급 및 퍼지로 구성되는 사이클을 반복진행하여 HfO2와 Al2O3가 혼합된 (HfO2)1-x(Al2O3)x을 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제21항에 있어서,상기 하프늄소스와 알루미늄소스가 혼합된 소스가스는 HfAl(MMP)2(OiPr)5을 사용하고, 상기 산화원은 O3 또는 H2O 산소 플라즈마를 이용하며, 상기 퍼지를 위한 가스는 질소 또는 아르곤을 이용하는 것을 특징으로 하는 캐패시터의 제조 방법.
- 제16항 또는 제21항에 있어서,상기 하부전극과 상기 상부전극은,각각 폴리실리콘, TiN, Ru, RuO2, Pt, Ir 또는 IrO2 중에서 선택되는 하나로 형성하는 것을 특징으로 하는 캐패시터의 제조 방법.
Priority Applications (8)
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KR1020030083399A KR100584996B1 (ko) | 2003-11-22 | 2003-11-22 | 산화하프늄과 산화알루미늄이 혼합된 유전막을 갖는캐패시터 및 그 제조 방법 |
US10/819,294 US7229888B2 (en) | 2003-11-22 | 2004-04-07 | Capacitor with hafnium oxide and aluminum oxide alloyed dielectric layer and method for fabricating the same |
TW093109896A TWI250539B (en) | 2003-11-22 | 2004-04-09 | Capacitor with hafnium oxide and aluminum oxide alloyed dielectric layer and method for fabricating the same |
DE102004020157A DE102004020157A1 (de) | 2003-11-22 | 2004-04-24 | Kondensator mit legierter dielektrischer Hafnium-Oxid und Aluminium-Oxid-Schicht und Verfahren zur Herstellung desselben |
JP2004129856A JP5013662B2 (ja) | 2003-11-22 | 2004-04-26 | キャパシタ及びその製造方法 |
CN2009102606655A CN101714506B (zh) | 2003-11-22 | 2004-06-30 | 具有氧化铪与氧化铝合成介电层的电容器及其制造方法 |
CNA2004100626276A CN1619819A (zh) | 2003-11-22 | 2004-06-30 | 具有氧化铪与氧化铝合成介电层的电容器及其制造方法 |
US11/802,683 US7416936B2 (en) | 2003-11-22 | 2007-05-24 | Capacitor with hafnium oxide and aluminum oxide alloyed dielectric layer and method for fabricating the same |
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KR1020030083399A KR100584996B1 (ko) | 2003-11-22 | 2003-11-22 | 산화하프늄과 산화알루미늄이 혼합된 유전막을 갖는캐패시터 및 그 제조 방법 |
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KR100584996B1 true KR100584996B1 (ko) | 2006-05-29 |
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US (2) | US7229888B2 (ko) |
JP (1) | JP5013662B2 (ko) |
KR (1) | KR100584996B1 (ko) |
CN (2) | CN101714506B (ko) |
DE (1) | DE102004020157A1 (ko) |
TW (1) | TWI250539B (ko) |
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-
2003
- 2003-11-22 KR KR1020030083399A patent/KR100584996B1/ko not_active IP Right Cessation
-
2004
- 2004-04-07 US US10/819,294 patent/US7229888B2/en not_active Expired - Fee Related
- 2004-04-09 TW TW093109896A patent/TWI250539B/zh not_active IP Right Cessation
- 2004-04-24 DE DE102004020157A patent/DE102004020157A1/de not_active Withdrawn
- 2004-04-26 JP JP2004129856A patent/JP5013662B2/ja not_active Expired - Fee Related
- 2004-06-30 CN CN2009102606655A patent/CN101714506B/zh not_active Expired - Fee Related
- 2004-06-30 CN CNA2004100626276A patent/CN1619819A/zh active Pending
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Publication number | Publication date |
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US7229888B2 (en) | 2007-06-12 |
TWI250539B (en) | 2006-03-01 |
DE102004020157A1 (de) | 2005-06-23 |
CN1619819A (zh) | 2005-05-25 |
US20070223176A1 (en) | 2007-09-27 |
JP5013662B2 (ja) | 2012-08-29 |
US7416936B2 (en) | 2008-08-26 |
US20050110115A1 (en) | 2005-05-26 |
CN101714506B (zh) | 2013-08-21 |
JP2005159271A (ja) | 2005-06-16 |
CN101714506A (zh) | 2010-05-26 |
TW200518130A (en) | 2005-06-01 |
KR20050049701A (ko) | 2005-05-27 |
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