KR20020061880A - 금속 산화막을 유전막으로 하는 반도체 커패시터의 형성방법 - Google Patents
금속 산화막을 유전막으로 하는 반도체 커패시터의 형성방법 Download PDFInfo
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- KR20020061880A KR20020061880A KR1020010002960A KR20010002960A KR20020061880A KR 20020061880 A KR20020061880 A KR 20020061880A KR 1020010002960 A KR1020010002960 A KR 1020010002960A KR 20010002960 A KR20010002960 A KR 20010002960A KR 20020061880 A KR20020061880 A KR 20020061880A
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- Prior art keywords
- metal
- film
- source gas
- tantalum
- reaction chamber
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- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000004065 semiconductor Substances 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 title abstract description 22
- 230000015572 biosynthetic process Effects 0.000 title description 9
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 title 1
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 55
- 239000007789 gas Substances 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000002243 precursor Substances 0.000 claims abstract description 25
- 239000001301 oxygen Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 17
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 17
- 229910052715 tantalum Inorganic materials 0.000 claims description 42
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 150000004767 nitrides Chemical class 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 229920005591 polysilicon Polymers 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 229910052741 iridium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000005229 chemical vapour deposition Methods 0.000 abstract description 5
- 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 13
- 229910001936 tantalum oxide Inorganic materials 0.000 description 13
- 238000000231 atomic layer deposition Methods 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 239000010936 titanium Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/06—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material
- C23C16/18—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of metallic material from metallo-organic compounds
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- 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
- H01L21/022—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 the layer being a laminate, i.e. composed of sublayers, e.g. stacks of alternating high-k metal oxides
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/0223—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by oxidation, e.g. oxidation of the substrate
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/02227—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process
- H01L21/02255—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a process other than a deposition process formation by thermal treatment
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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
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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
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- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
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- 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
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- H01L21/02107—Forming insulating materials on a substrate
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Abstract
Description
Claims (16)
- a) 반도체 기판 상에 하부전극을 형성하는 단계;b) 산소를 함유하는 금속 전구체를 소스가스로 화학기상증착하여 상기 하부전극 표면 상에 금속 전처리막을 형성하는 단계;c) 상기 금속 전처리막 상에 금속 산화막을 형성하는 단계; 및d) 상기 금속 산화막 상에 상부전극을 형성하는 단계를 포함하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 하부전극은 폴리실리콘막, 희금속막, 금속질화물막또는 이들의 복합막인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 희금속은 Ru, Pt, 또는 Ir 중에서 선택된 어느 하나의 금속인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 금속은 탄탈륨을 포함하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 4 항에 있어서, 상기 금속 전구체는 Ta(OC2H5)5또는 Ta(OCH3)5인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 금속질화물은 Ti, Ta 또는 W의 질화물인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 b) 단계는e) 상기 반도체 기판을 반응실 내로 인입하는 단계;f) 상기 반응실 내로 산소를 함유하는 금속 전구체를 유입시키는 단계;g) 상기 금속 전구체를 상기 하부전극 상에 흡착 및 반응시키는 단계; 및h) 상기 반응실 내의 금속 전구체를 퍼지시키는 단계를 포함하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 7 항에 있어서, 상기 금속은 탄탈륨을 포함하는 것을 특징으로 하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 8 항에 있어서, 상기 금속 전구체는 Ta(OC2H5)5또는 Ta(OCH3)5인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 5 항에 있어서, 상기 f) 단계 내지 g) 단계를 반복하여 수행하여 금속 전처리막을 형성하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 5 항에 있어서, 상기 f) 단계 내지 h) 단계에서 반응실 온도는 100 ~ 600℃ 인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 5 항에 있어서, 상기 h) 단계의 퍼지가스는 질소 또는 아르곤 등의 불활성 가스인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 1 항에 있어서, 상기 c) 단계는상기 금속 전처리막이 형성된 반도체 기판을 반응실 내로 인입하는 단계;상기 반응실 내로 금속 소스가스를 유입하여 상기 기판 상에 흡착시키는 단계;상기 반응실 내의 금속 소스가스를 퍼지시키는 단계;상기 반응실 내로 산소 소스가스를 유입하여 상기 기판 상에 흡착시키는 단계; 및상기 흡착된 금속 소스가스 및 산소 소스가스를 반응시켜 금속 산화막을 형성하는 단계를 포함하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 13 항에 있어서, 상기 금속 소스가스는 탄탈륨을 포함하는 소스가스인 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 14 항에 있어서, 상기 소스가스는 Ta(OC2H5)5또는 Ta(OCH3)5또는 TaCl5중에서 선택된 하나 이상을 사용하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
- 제 13 항에 있어서, 상기 산소 소스가스로는 H2O, H2O2, O2, N2O, 또는 O3에서 선택된 하나 이상을 사용하는 것을 특징으로 하는 반도체 커패시터의 형성방법.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2001-0002960A KR100393209B1 (ko) | 2001-01-18 | 2001-01-18 | 금속 산화막을 유전막으로 하는 반도체 커패시터의 형성방법 |
US10/043,027 US6919243B2 (en) | 2001-01-18 | 2002-01-09 | Methods of forming an integrated circuit capacitor in which a metal preprocessed layer is formed on an electrode thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR10-2001-0002960A KR100393209B1 (ko) | 2001-01-18 | 2001-01-18 | 금속 산화막을 유전막으로 하는 반도체 커패시터의 형성방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7303973B2 (en) | 2002-07-29 | 2007-12-04 | Elpida Memory, Inc. | ALD process for capacitor dielectric |
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JP2003282873A (ja) * | 2002-03-22 | 2003-10-03 | Sony Corp | 半導体装置およびその製造方法 |
KR100464855B1 (ko) * | 2002-07-26 | 2005-01-06 | 삼성전자주식회사 | 박막 형성 방법과, 이를 이용한 커패시터 형성 방법 및트랜지스터 형성 방법 |
US7030042B2 (en) * | 2002-08-28 | 2006-04-18 | Micron Technology, Inc. | Systems and methods for forming tantalum oxide layers and tantalum precursor compounds |
US6784049B2 (en) * | 2002-08-28 | 2004-08-31 | Micron Technology, Inc. | Method for forming refractory metal oxide layers with tetramethyldisiloxane |
US6861355B2 (en) * | 2002-08-29 | 2005-03-01 | Micron Technology, Inc. | Metal plating using seed film |
US20040092072A1 (en) * | 2002-11-07 | 2004-05-13 | Kim Sarah E. | Arrangements having increased on-die capacitance |
US6863725B2 (en) * | 2003-02-04 | 2005-03-08 | Micron Technology, Inc. | Method of forming a Ta2O5 comprising layer |
US7230292B2 (en) * | 2003-08-05 | 2007-06-12 | Micron Technology, Inc. | Stud electrode and process for making same |
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US6052271A (en) * | 1994-01-13 | 2000-04-18 | Rohm Co., Ltd. | Ferroelectric capacitor including an iridium oxide layer in the lower electrode |
JPH10173490A (ja) * | 1996-12-10 | 1998-06-26 | Sony Corp | シンセサイザ受信機 |
US6218260B1 (en) * | 1997-04-22 | 2001-04-17 | Samsung Electronics Co., Ltd. | Methods of forming integrated circuit capacitors having improved electrode and dielectric layer characteristics and capacitors formed thereby |
KR100319888B1 (ko) * | 1998-06-16 | 2002-01-10 | 윤종용 | 선택적 금속층 형성방법, 이를 이용한 커패시터 형성 및 콘택홀 매립방법 |
JP2000012796A (ja) * | 1998-06-19 | 2000-01-14 | Hitachi Ltd | 半導体装置ならびにその製造方法および製造装置 |
KR100549566B1 (ko) * | 1998-10-29 | 2007-12-21 | 주식회사 하이닉스반도체 | 반도체장치의 캐퍼시터 형성방법 |
KR100304699B1 (ko) * | 1999-01-05 | 2001-09-26 | 윤종용 | 탄탈륨 산화막을 갖춘 커패시터 제조방법 |
JP2000208720A (ja) * | 1999-01-13 | 2000-07-28 | Lucent Technol Inc | 電子デバイス、momキャパシタ、mosトランジスタ、拡散バリア層 |
JP2000311989A (ja) * | 1999-04-27 | 2000-11-07 | Sharp Corp | 強誘電体キャパシタ素子及び不揮発性半導体記憶素子 |
GB2358284B (en) * | 1999-07-02 | 2004-07-14 | Hyundai Electronics Ind | Method of manufacturing capacitor for semiconductor memory device |
KR100351238B1 (ko) * | 1999-09-14 | 2002-09-09 | 주식회사 하이닉스반도체 | 반도체 소자의 캐패시터 제조 방법 |
US6420230B1 (en) * | 2000-08-31 | 2002-07-16 | Micron Technology, Inc. | Capacitor fabrication methods and capacitor constructions |
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2001
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7303973B2 (en) | 2002-07-29 | 2007-12-04 | Elpida Memory, Inc. | ALD process for capacitor dielectric |
Also Published As
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US20020094634A1 (en) | 2002-07-18 |
KR100393209B1 (ko) | 2003-07-31 |
US6919243B2 (en) | 2005-07-19 |
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