KR100351907B1 - 반도체 소자의 게이트 전극 형성방법 - Google Patents
반도체 소자의 게이트 전극 형성방법 Download PDFInfo
- Publication number
- KR100351907B1 KR100351907B1 KR1020000068405A KR20000068405A KR100351907B1 KR 100351907 B1 KR100351907 B1 KR 100351907B1 KR 1020000068405 A KR1020000068405 A KR 1020000068405A KR 20000068405 A KR20000068405 A KR 20000068405A KR 100351907 B1 KR100351907 B1 KR 100351907B1
- Authority
- KR
- South Korea
- Prior art keywords
- film
- tungsten
- forming
- gate electrode
- diffusion barrier
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004065 semiconductor Substances 0.000 title claims abstract description 34
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 59
- 239000010937 tungsten Substances 0.000 claims abstract description 59
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 32
- 229920005591 polysilicon Polymers 0.000 claims abstract description 31
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910021342 tungsten silicide Inorganic materials 0.000 claims abstract description 22
- 230000004888 barrier function Effects 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 238000009792 diffusion process Methods 0.000 claims abstract description 17
- 238000000059 patterning Methods 0.000 claims abstract description 4
- -1 tungsten nitride Chemical class 0.000 claims description 22
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000012159 carrier gas Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 206010010144 Completed suicide Diseases 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4916—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen
- H01L29/4925—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen with a multiple layer structure, e.g. several silicon layers with different crystal structure or grain arrangement
- H01L29/4941—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen with a multiple layer structure, e.g. several silicon layers with different crystal structure or grain arrangement with a barrier layer between the silicon and the metal or metal silicide upper layer, e.g. Silicide/TiN/Polysilicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28035—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 silicon, e.g. polysilicon, with or without impurities
- H01L21/28044—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 silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer
- H01L21/28061—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 silicon, e.g. polysilicon, with or without impurities the conductor comprising at least another non-silicon conductive layer the conductor comprising a metal or metal silicide formed by deposition, e.g. sputter deposition, i.e. without a silicidation reaction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28247—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon passivation or protection of the electrode, e.g. using re-oxidation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4916—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen
- H01L29/4925—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen with a multiple layer structure, e.g. several silicon layers with different crystal structure or grain arrangement
Abstract
Description
Claims (7)
- 반도체 기판상에 게이트 절연막을 형성하는 단계;상기 게이트 절연막상에 폴리 실리콘막 및 텅스텐 실리사이드막을 차례로 형성하는 단계;상기 텅스텐 실리사이드막상에 확산 베리어막 및 텅스텐막을 차례로 형성하는 단계;상기 반도체 기판에 열처리 공정을 실시하여 확산 베리어막을 결정화시키는 단계;상기 텅스텐막상에 제 1 절연막을 형성하는 단계;상기 제 1 절연막, 텅스텐막, 확산 베리어막, 텅스텐 실리사이드막, 폴리 실리콘막, 게이트 절연막을 선택적으로 패터닝하여 게이트 전극을 형성하는 단계;상기 게이트 전극에 선택 산화 공정을 실시하는 단계;상기 게이트 전극 및 제 1 절연막의 양측면에 제 2 절연막 측벽을 형성하는 단계를 포함하여 형성함을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 1 항에 있어서, 상기 확산 베리어막은 비정질 질화 텅스텐막으로 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 1 항에 있어서, 상기 확산 베리어막을 600 ~ 800℃에서 1 ~ 60분간 열처리하여 결정화시키는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 1 항에 있어서, 상기 선택 산화 공정은 H2O/H2분위기에서 800 ~ 1000℃ 온도로 1 ~ 60분간 실시하고 케리어 가스로 Ar 및 N2를 사용하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 2 항에 있어서, 상기 비정질 질화 텅스텐의 N 함량은 5 ~ 55%인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 1 항에 있어서, 상기 텅스텐 실리사이드막의 Si/W 비는 2.0 ~ 3.0인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제 1 항에 있어서, 상기 확산 베리어막은 N 함량이 다른 질화 텅스텐막을 적층하여 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000068405A KR100351907B1 (ko) | 2000-11-17 | 2000-11-17 | 반도체 소자의 게이트 전극 형성방법 |
US09/798,942 US6306743B1 (en) | 2000-11-17 | 2001-03-06 | Method for forming a gate electrode on a semiconductor substrate |
JP2001120618A JP4484392B2 (ja) | 2000-11-17 | 2001-04-19 | 半導体素子のゲート電極形成方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020000068405A KR100351907B1 (ko) | 2000-11-17 | 2000-11-17 | 반도체 소자의 게이트 전극 형성방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20020038273A KR20020038273A (ko) | 2002-05-23 |
KR100351907B1 true KR100351907B1 (ko) | 2002-09-12 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020000068405A KR100351907B1 (ko) | 2000-11-17 | 2000-11-17 | 반도체 소자의 게이트 전극 형성방법 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6306743B1 (ko) |
JP (1) | JP4484392B2 (ko) |
KR (1) | KR100351907B1 (ko) |
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KR100433437B1 (ko) * | 2000-07-21 | 2004-05-31 | 미쓰비시덴키 가부시키가이샤 | 반도체 장치 및 그 제조 방법 및 cmos 트랜지스터 |
US7544597B2 (en) | 2005-01-17 | 2009-06-09 | Samsung Electronics Co., Ltd. | Method of forming a semiconductor device including an ohmic layer |
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JP2000156497A (ja) * | 1998-11-20 | 2000-06-06 | Toshiba Corp | 半導体装置の製造方法 |
KR100291513B1 (ko) * | 1998-12-22 | 2001-07-12 | 박종섭 | 반도체 소자의 제조방법 |
KR100345364B1 (ko) * | 1998-12-28 | 2002-09-18 | 주식회사 하이닉스반도체 | 반도체 소자의 게이트전극 형성방법 |
US6110812A (en) * | 1999-05-11 | 2000-08-29 | Promos Technologies, Inc. | Method for forming polycide gate |
US6198144B1 (en) * | 1999-08-18 | 2001-03-06 | Micron Technology, Inc. | Passivation of sidewalls of a word line stack |
-
2000
- 2000-11-17 KR KR1020000068405A patent/KR100351907B1/ko active IP Right Grant
-
2001
- 2001-03-06 US US09/798,942 patent/US6306743B1/en not_active Expired - Lifetime
- 2001-04-19 JP JP2001120618A patent/JP4484392B2/ja not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100433437B1 (ko) * | 2000-07-21 | 2004-05-31 | 미쓰비시덴키 가부시키가이샤 | 반도체 장치 및 그 제조 방법 및 cmos 트랜지스터 |
US7544597B2 (en) | 2005-01-17 | 2009-06-09 | Samsung Electronics Co., Ltd. | Method of forming a semiconductor device including an ohmic layer |
US7875939B2 (en) | 2005-01-17 | 2011-01-25 | Samsung Electronics Co., Ltd. | Semiconductor device including an ohmic layer |
Also Published As
Publication number | Publication date |
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JP2002170954A (ja) | 2002-06-14 |
KR20020038273A (ko) | 2002-05-23 |
JP4484392B2 (ja) | 2010-06-16 |
US6306743B1 (en) | 2001-10-23 |
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