KR970053037A - 반도체 소자의 게이트 전극 형성방법 - Google Patents
반도체 소자의 게이트 전극 형성방법 Download PDFInfo
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- KR970053037A KR970053037A KR1019950055598A KR19950055598A KR970053037A KR 970053037 A KR970053037 A KR 970053037A KR 1019950055598 A KR1019950055598 A KR 1019950055598A KR 19950055598 A KR19950055598 A KR 19950055598A KR 970053037 A KR970053037 A KR 970053037A
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- Prior art keywords
- forming
- etching
- oxide film
- gate electrode
- silicon substrate
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000004065 semiconductor Substances 0.000 title claims abstract description 5
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000005530 etching Methods 0.000 claims abstract 11
- 239000000758 substrate Substances 0.000 claims abstract 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract 8
- 239000010703 silicon Substances 0.000 claims abstract 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract 7
- 229920005591 polysilicon Polymers 0.000 claims abstract 7
- 229910052723 transition metal Inorganic materials 0.000 claims abstract 4
- 150000003624 transition metals Chemical class 0.000 claims abstract 4
- 238000010438 heat treatment Methods 0.000 claims 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a 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
- H01L29/495—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a simple metal, e.g. W, Mo
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- 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
- H01L21/28—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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28556—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table by chemical means, e.g. CVD, LPCVD, PECVD, laser CVD
- H01L21/28562—Selective deposition
-
- 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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28568—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising transition metals
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
본 원은 반도체 소자의 게이트 전극 형성방법을 개시한다. 개시된 본원은 실리콘 기판상에 열산화막을 형성하는 단계, 상기 열산화막을 게이트 전극 예정 영역에만 존재하도록 식각하는 단계; 상기 식각이 이루어진 열산화막의 형태로 하부의 실리콘 기판을 소정 깊이 만큼 식각하여 돌출부를 형성하는 단계; 상기 돌출부를 구비한 실리콘 기판 전면에 게이트 산화막을 형성하는 단계; 상기 게이트 산화막 상부에 도핑된 폴리실리콘층을 형성하는 단계; 상기 도핑된 폴리실리콘층을 소정 부분 식각하여 돌출부의 측벽부 및 하단의 일부분만에 존재하도록 식각하는 단계; 및 상기 식각이 이루어진 폴리실리콘층을 감싸안도록 전이 금속막을 형성하여 게이트 전극을 형성하는 단계를 포함하는 것을 특징으로 한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 (a)내지 (d)는 본 발명에 따른 반도체 소자의 게이트 전극 형성방법을 설명하기 위한 공정 순서도.
Claims (7)
- 실리콘 기판상에 열산화막을 형성하는 단계; 상기 열산화막을 게이트 전극 예정 영역에만 존재하도록 식각하는 단계; 상기 식각이 이루어진 열산화막의 형태로 하부의 실리콘 기판을 소정 깊이 만큼 식각하여 돌출부를 형성하는 단계; 상기 돌출부를 구비한 실리콘 기판 전면에 게이트 산화막을 형성하는 단계; 상기 게이트 산화막 상부에 도핑된 폴리실리콘층을 형성하는 단계; 상기 도핑된 폴리실리콘층을 소정 부분 식각하여 돌출부의 측벽부 및 하단의 일부분만에 존재하도록 식각하는 단계; 및 상기 식각이 이루어진 폴리실리콘층을 감싸안도록 전이 금속막을 형성하여 게이트 전극을 형성하는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제1항에 있어서, 상기 실리콘 기판부의 소정 부분을 식각하여 돌출부를 형성하는 단계에서, 상기 돌출부를 형성하기 위한 실리콘 기판의 식각 깊이는 1000 내지 5000Å인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제1항 또는 제2항에 있어서, 상기 돌출부를 형성하는 식각시 플라즈마 식각에 의하여, 측벽부가 20°내지 40°경사가 지도록 식각하여 형성하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제1항에 있어서, 상기 전이 금속막을 형성하여 게이트 전극을 형성하는 단계이후, 노출된 기판 표면을 열처리하여 산화막을 형성하는 단계를 부가적으로 포함하는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제4항에 있어서, 상기 열처리에 의한 산화막을 형성하는 단계는 수증기가 약 3 내지 8% 함유된 수소분위기 하에서, 900 내지 1000℃ 정도의 온도로 10 내지 60분 동안 노출된 기판을 열성장시키는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제4항 및 제5항에 있어서, 상기 열처리에 의한 산화막의 두께는 300 내지 800Å인 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.
- 제1항에 있어서, 상기 전이 금속막은 선택적 증착방식에 의하여 폴리실리콘 패턴이 존재하는 곳에만 형성되는 것을 특징으로 하는 반도체 소자의 게이트 전극 형성방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950055598A KR0171988B1 (ko) | 1995-12-23 | 1995-12-23 | 반도체 소자의 게이트 전극 형성방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950055598A KR0171988B1 (ko) | 1995-12-23 | 1995-12-23 | 반도체 소자의 게이트 전극 형성방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970053037A true KR970053037A (ko) | 1997-07-29 |
KR0171988B1 KR0171988B1 (ko) | 1999-03-30 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950055598A KR0171988B1 (ko) | 1995-12-23 | 1995-12-23 | 반도체 소자의 게이트 전극 형성방법 |
Country Status (1)
Country | Link |
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KR (1) | KR0171988B1 (ko) |
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1995
- 1995-12-23 KR KR1019950055598A patent/KR0171988B1/ko not_active IP Right Cessation
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KR0171988B1 (ko) | 1999-03-30 |
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