KR20050116073A - 반도체 소자들 및 그 형성 방법들 - Google Patents
반도체 소자들 및 그 형성 방법들 Download PDFInfo
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- KR20050116073A KR20050116073A KR1020040040986A KR20040040986A KR20050116073A KR 20050116073 A KR20050116073 A KR 20050116073A KR 1020040040986 A KR1020040040986 A KR 1020040040986A KR 20040040986 A KR20040040986 A KR 20040040986A KR 20050116073 A KR20050116073 A KR 20050116073A
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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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66787—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
- H01L29/66795—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66545—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
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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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66553—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using inside spacers, permanent or not
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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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/785—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
- H01L29/7853—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET the body having a non-rectangular crossection
- H01L29/7854—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET the body having a non-rectangular crossection with rounded corners
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78645—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with multiple gate
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/785—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
- H01L2029/7858—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET having contacts specially adapted to the FinFET geometry, e.g. wrap-around contacts
Abstract
Description
Claims (27)
- 수직 측면들 및 수평 상부면을 가지는 반도체 핀을 형성하고;상기 반도체 핀의 측면들 상에 제1절연막을 형성하고;상기 제1절연막 상에 산화방지막을 형성하고;열산화 공정을 진행하여 상기 반도체 핀의 상부를 산화시켜 상기 제1절연막보다 두꺼운 4족원소 산화물로 이루어진 캐핑막을 형성하는 동시에 반도체 핀의 상부 모서리가 곡선 프로파일을 가지도록 하는 것을 포함하는 반도체 핀 형성 방법.
- 제1항에 있어서,상기 반도체 핀을 형성하는 것은:반도체 기판 상에 상기 반도체 핀을 정의하는 식각 마스크 패턴을 형성하고;상기 식각 마스크 패턴에 의해 노출된 반도체 기판을 소정 깊이 식각하여 상기 식각 마스크 패턴 아래에 반도체 핀을 형성하고;상기 반도체 핀의 측면들 일부분을 덮는 소자분리절연막을 형성하고;상기 식각 마스크 패턴을 제거하는 것을 포함하여 이루어지는 반도체 소자 형성 방법.
- 제1항에 있어서,상기 반도체 핀을 형성하는 것은:반도체 기판 상에 식각 마스크 패턴을 형성하고;상기 식각 마스크 패턴에 의해 노출된 기판 일부 두께를 식각하여 반도체 핀을 형성하고;상기 반도체 핀 측면들 및 식각 마스크 패턴의 측면들을 덮는 소자분리절연막을 형성하고;상기 소자분리절연막 및 식각 마스크 패턴 상에 더미 게이트 패턴을 형성하고;상기 더미 게이트 패턴에 의해 노출된 식각 마스크 패턴을 제거하고 상기 소자분리절연막의 일부 두께를 제거하는 것을 포함하여 이루어지는 반도체 소자 형성 방법.
- 제1항에 있어서,상기 반도체 핀을 형성하는 것은:반도체 기판 상에 상기 반도체 핀을 정의하는 식각 마스크 패턴을 형성하고;상기 식각 마스크 패턴에 의해 노출된 반도체 기판을 소정 깊이 식각하여 상기 식각 마스크 패턴 아래에 반도체 핀을 형성하고;상기 식각 마스크 패턴을 제거하는 것을 포함하여 이루어지는 반도체 소자 형성 방법.
- 제1항에 있어서,상기 산화방지막은 실리콘 질화물로 형성되는 반도체 소자 형성 방법.
- 제1항 내지 제5항중 어느 한 항에 있어서,상기 반도체 핀은 실리콘 또는 실리콘게르마늄으로 형성되고, 상기 캐핑막은 실리콘산화막 또는 실리콘게르마늄산화막으로 형성되는 반도체 소자 형성 방법.
- 제6항에 있어서,상기 제1절연막 및 상기 캐핑막 상에 제2절연막을 형성하고;상기 제2절연막 상에 게이트 전극을 형성하고;상기 게이트 전극 양측의 반도체 핀내에 불순물 확산영역들을 형성하는 것을 더 포함하는 반도체 소자 형성 방법.
- 제7항에 있어서,상기 제1절연막 및 상기 제2절연막은 산화물로 형성되는 반도체 소자 형성 방법.
- 제7항에 있어서,상기 제2절연막을 형성하기 전에, 상기 산화방지막을 제거한 후 상기 제1절연막 및 상기 캐핑막 상에 전하저장막을 형성하는 것을 더 포함하는 반도체 소자 형성 방법.
- 제9항에 있어서,상기 전하저장막은 실리콘 질화물, 폴리 실리콘, 비정질 실리콘, 나노-크리스탈, 또는 퀀텀 닷 물질로 형성되는 하는 반도체 소자 형성 방법.
- 제9항에 있어서,상기 게이트 전극을 형성하기 전에 상기 캐핑막을 제거하는 것을 더 포함하는 반도체 소자 형성 방법.
- 제6항에 있어서,상기 산화방지막을 제거하고;게이트 전극을 형성하고;상기 게이트 전극 양측의 반도체 핀내에 불순물 확산영역들을 형성하는 것을 더 포함하는 반도체 소자 형성 방법.
- 제12항에 있어서,상기 게이트 전극을 형성하기 전에 상기 캐핑막을 제거하는 것을 더 포함하는 반도체 소자 형성 방법.
- 수직 측면들 및 수평 상부면을 가지는 반도체 핀;상기 반도체 핀의 상부면 상에 형성되고 4족원소 산화물로 이루어진 캐핑막;상기 반도체 핀의 측면들 상에 형성되고 상기 캐핑막보다 얇은 제1절연막을 포함하는 반도체 소자.
- 제14항에 있어서,상기 제1절연막 및 캐핑막 상에 형성된 게이트 전극;상기 게이트 전극 양측의 반도체 핀에 형성된 불순물 확산영역들을 더 포함하는 반도체 소자.
- 제15항에 있어서,상기 캐핑막은 실리콘산화막 또는 실리콘게르마늄산화막인 것을 특징으로 하는 반도체 소자.
- 제15항 또는 제16항에 있어서,상기 반도체 핀의 상부 모서리 프로파일은 곡선을 나타내는 것을 특징으로 하는 반도체 소자.
- 제15항 또는 제16항에 있어서,상기 제1절연막 및 캐핑막 상에 형성된 전하저장막;상기 전하저장막 상에 형성된 제2절연막을 더 포함하는 것을 특징으로 하는 반도체 소자.
- 제18항에 있어서,상기 전하저장막의 상부 수평면은 상기 반도체 핀의 상부 수평면보다 높고 상기 캐핑막의 상부 수평면보다 낮은 것을 특징으로 하는 반도체 소자.
- 제19항에 있어서,상기 반도체 핀의 상부 모서리 프로파일은 곡선을 나타내는 것을 특징으로 하는 반도체 소자.
- 제19항에 있어서,상기 전하저장막은 실리콘 질화물, 폴리 실리콘, 비정질 실리콘, 나노-크리스탈, 또는 퀀텀 닷 물질인 것을 특징으로 하는 반도체 소자.
- 제18항에 있어서,상기 제1절연막은 산화막이고 제2절연막은 산화막-질화막-산화막 또는 질화막-산화막-질화막이 적층된 다층막인 것을 특징으로 하는 반도체 소자.
- 반도체 기판 상에 식각 마스크 패턴을 형성하고;상기 식각 마스크 패턴에 의해 노출된 기판의 일부 두께를 식각하여 반도체 핀을 형성하고;상기 반도체 핀의 측면 일부를 덮도록 소자분리절연막을 형성하고;상기 식각 마스크 패턴을 제거하여 상기 반도체 핀의 상부면을 노출시키고;상기 반도체 핀의 측면들 상에 제1절연막을 형성하고;상기 제1절연막 상에 산화방지막을 형성하고;열산화 공정을 진행하여 상기 노출된 반도체 핀의 상부면을 산화시켜 상기 제1절연막보다 두꺼운 4족원소 산화물로 이루어진 캐핑막을 형성하고;상기 산화방지막 및 제1절연막 상에 제2절연막을 형성하고;상기 제2절연막 상에 게이트 전극을 형성하고;상기 게이트 전극 양측의 반도체 핀내에 불순물확산영역들을 형성하는 것을 포함하는 반도체 소자 형성 방법.
- 제23항에 있어서,상기 제2절연막을 형성하기 전에 상기 산화방지막 및 제1절연막을 제거하고;전하저장막을 형성하는 것을 더 포함하는 반도체 소자 형성 방법.
- 제24항에 있어서;상기 전하저장막을 형성한 후 에치백 공정을 진행하는 것을 더 포함하는 반도체 소자 형성 방법.
- 반도체 기판 상에 식각 마스크 패턴을 형성하고;상기 식각 마스크 패턴에 의해 노출된 기판의 일부 두께를 식각하여 반도체 핀을 형성하고;상기 반도체 핀의 측면 일부를 덮도록 소자분리절연막을 형성하고;상기 식각 마스크 패턴을 제거하여 상기 반도체 핀의 상부면을 노출시키고;상기 반도체 핀의 측면들 상에 제1절연막을 형성하고;상기 제1절연막 상에 산화방지막을 형성하고;열산화 공정을 진행하여 상기 노출된 반도체 핀의 상부면을 산화시켜 상기 제1절연막보다 두꺼운 4족원소 산화물로 이루어진 캐핑막을 형성하고;상기 산화방지막을 제거하고;상기 제1절연막 및 상기 캐핑막 상에 게이트 전극을 형성하고;상기 게이트 전극 양측의 반도체 핀내에 불순물확산영역들을 형성하는 것을 포함하는 반도체 소자 형성 방법.
- 제26항에 있어서,상기 게이트 전극을 형성하기 전에 상기 캐핑막을 제거하는 것을 더 포함하는 반도체 소자 형성 방법.
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Also Published As
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KR100634372B1 (ko) | 2006-10-16 |
US20080029828A1 (en) | 2008-02-07 |
US7297600B2 (en) | 2007-11-20 |
US7745871B2 (en) | 2010-06-29 |
US20050272192A1 (en) | 2005-12-08 |
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