KR102384805B1 - 랩-어라운드 콘택들을 제조하기 위한 금속 화학 기상 증착 접근법들 및 결과 구조들 - Google Patents
랩-어라운드 콘택들을 제조하기 위한 금속 화학 기상 증착 접근법들 및 결과 구조들 Download PDFInfo
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- KR102384805B1 KR102384805B1 KR1020197025556A KR20197025556A KR102384805B1 KR 102384805 B1 KR102384805 B1 KR 102384805B1 KR 1020197025556 A KR1020197025556 A KR 1020197025556A KR 20197025556 A KR20197025556 A KR 20197025556A KR 102384805 B1 KR102384805 B1 KR 102384805B1
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- H10D30/62—Fin field-effect transistors [FinFET]
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- 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
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- 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
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- 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
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- 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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- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
- H01L21/76802—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76816—Aspects relating to the layout of the pattern or to the size of vias or trenches
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- H—ELECTRICITY
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Abstract
Description
도 1b는 본 개시내용의 일 실시예에 따른, 화학 기상 증착(CVD)에 의해 그 위에 형성된 도전성 콘택을 갖는 반도체 핀의 단면도를 예시한다.
도 2a는 본 개시내용의 일 실시예에 따른, 소스 또는 드레인 영역 상에 도전성 콘택을 갖는 반도체 디바이스의 단면도를 예시한다.
도 2b는 본 개시내용의 일 실시예에 따른, 상승된 소스 또는 드레인 영역 상에 도전성인 것을 갖는 다른 반도체 디바이스의 단면도를 예시한다.
도 3은 본 개시내용의 일 실시예에 따른, 한 쌍의 반도체 핀 위의 복수의 게이트 라인의 평면도를 예시한다.
도 4a 내지 도 4c는 본 개시내용의 일 실시예에 따른, 집적 회로 구조를 제조하는 방법에서의 다양한 동작들에 대한, 도 3의 a-a' 축을 따라 취해진 단면도들을 도시한다.
도 5는 본 개시내용의 일 실시예에 따른, 집적 회로 구조에 대한, 도 3의 b-b' 축을 따라 취해진 단면도를 예시한다.
도 6은 본 개시내용의 일 실시예에 따른, 집적 회로 구조의 금속화 층의 평면도 및 대응하는 단면도를 예시한다.
도 7a는 본 개시내용의 일 실시예에 따른, 게이트 전극의 일함수 층으로서 CVD-증착된 층을 갖는 비평면 반도체 디바이스의 단면도를 예시한다.
도 7b는 본 개시내용의 일 실시예에 따른, 도 7a의 반도체 디바이스의 a-a' 축을 따라 취해진 평면도를 예시한다.
도 8은 본 개시내용의 일 실시예의 일 구현에 따른 컴퓨팅 디바이스를 예시한다.
도 9는 본 개시내용의 하나 이상의 실시예를 구현하는 인터포저이다.
Claims (25)
- 집적 회로 구조로서,
기판 위의 반도체 피처;
상기 반도체 피처 위의 유전체 층 - 상기 유전체 층은 상기 반도체 피처의 일부를 노출시키는 트렌치를 가지며, 상기 일부는 평평하지 않은 토포그래피를 가짐 -; 및
상기 반도체 피처의 일부 바로 위에 있는 금속 콘택 재료를 포함하고, 상기 금속 콘택 재료는 상기 반도체 피처의 일부의 평평하지 않은 토포그래피와 등각이고, 상기 금속 콘택 재료는 95% 이상의 단일 금속 종을 포함하는 총 원자 조성을 갖는, 집적 회로 구조. - 제1항에 있어서, 상기 금속 콘택 재료는 98% 이상의 티타늄을 포함하는 총 원자 조성을 갖는, 집적 회로 구조.
- 제2항에 있어서, 상기 금속 콘택 재료의 총 원자 조성은 0.5-2%의 염소를 추가로 포함하는, 집적 회로 구조.
- 제1항에 있어서, 상기 금속 콘택 재료는 상기 반도체 피처의 일부의 평평하지 않은 토포그래피를 따라 30% 이하의 두께 변동을 갖는, 집적 회로 구조.
- 제1항에 있어서, 상기 반도체 피처의 일부의 평평하지 않은 토포그래피는 상승된 중앙 부분 및 하부 측면 부분들을 포함하는, 집적 회로 구조.
- 제1항에 있어서, 상기 반도체 피처의 일부의 평평하지 않은 토포그래피는 안장 형상 부분을 포함하는, 집적 회로 구조.
- 제1항에 있어서, 상기 반도체 피처는 실리콘을 포함하는, 집적 회로 구조.
- 제7항에 있어서, 상기 반도체 피처는 게르마늄을 추가로 포함하는, 집적 회로 구조.
- 제1항에 있어서, 상기 금속 콘택 재료는 또한 상기 유전체 층 내의 상기 트렌치의 측벽들을 따라 있고, 상기 트렌치의 측벽들을 따른 상기 금속 콘택 재료의 두께는 상기 반도체 피처의 일부로부터 상기 반도체 피처의 일부 위의 위치까지 얇아지는, 집적 회로 구조.
- 제9항에 있어서,
상기 트렌치 내의 상기 금속 콘택 재료 상의 도전성 충전 재료를 추가로 포함하는, 집적 회로 구조. - 집적 회로 구조로서,
기판 위의 반도체 핀 - 상기 반도체 핀은 최상부 및 측벽들을 가짐 -;
상기 반도체 핀의 일부의 상기 측벽들에 인접하고 상기 최상부 위에 있는 게이트 전극 - 상기 게이트 전극은 상기 반도체 핀 내에 채널 영역을 정의함 -;
상기 게이트 전극의 제1 측면에 있는 상기 채널 영역의 제1 단부에 있는 제1 반도체 소스/드레인 구조 - 상기 제1 반도체 소스/드레인 구조는 평평하지 않은 토포그래피를 가짐 -;
상기 게이트 전극의 제2 측면에 있는 상기 채널 영역의 제2 단부에 있는 제2 반도체 소스/드레인 구조 - 상기 제2 단부는 상기 제1 단부의 반대편에 있고, 상기 제2 측면은 상기 제1 측면의 반대편에 있고, 상기 제2 반도체 소스/드레인 구조는 평평하지 않은 토포그래피를 가짐 -; 및
상기 제1 반도체 소스/드레인 구조 바로 위에 그리고 상기 제2 반도체 소스/드레인 구조 바로 위에 있는 금속 콘택 재료를 포함하고, 상기 금속 콘택 재료는 상기 제1 반도체 소스/드레인 구조의 평평하지 않은 토포그래피와 등각이고 상기 제2 반도체 소스/드레인 구조의 평평하지 않은 토포그래피와 등각이고, 상기 금속 콘택 재료는 95% 이상의 단일 금속 종을 포함하는 총 원자 조성물을 갖는, 집적 회로 구조. - 제11항에 있어서, 상기 금속 콘택 재료는 98% 이상의 티타늄을 포함하는 총 원자 조성을 갖는, 집적 회로 구조.
- 제12항에 있어서, 상기 금속 콘택 재료의 총 원자 조성은 0.5-2%의 염소를 추가로 포함하는, 집적 회로 구조.
- 제11항에 있어서, 상기 금속 콘택 재료는 상기 제1 반도체 소스/드레인 구조의 평평하지 않은 토포그래피를 따라 그리고 상기 제2 반도체 소스/드레인 구조의 평평하지 않은 토포그래피를 따라 30% 이하의 두께 변동을 갖는, 집적 회로 구조.
- 제11항에 있어서, 상기 제1 반도체 소스/드레인 구조의 평평하지 않은 토포그래피 및 상기 제2 반도체 소스/드레인 구조의 평평하지 않은 토포그래피는 둘 다 상승된 중앙 부분 및 하부 측면 부분들을 포함하는, 집적 회로 구조.
- 제11항에 있어서, 상기 제1 반도체 소스/드레인 구조의 평평하지 않은 토포그래피 및 상기 제2 반도체 소스/드레인 구조의 평평하지 않은 토포그래피는 둘 다 안장 형상 부분들을 포함하는, 집적 회로 구조.
- 제11항에 있어서, 상기 제1 반도체 소스/드레인 구조 및 상기 제2 반도체 소스/드레인 구조는 둘 다 실리콘을 포함하는, 집적 회로 구조.
- 제17항에 있어서, 상기 제1 반도체 소스/드레인 구조 및 상기 제2 반도체 소스/드레인 구조는 둘 다 게르마늄을 추가로 포함하는, 집적 회로 구조.
- 제11항에 있어서, 상기 제1 반도체 소스/드레인 구조 바로 위에 있는 상기 금속 콘택 재료는 또한 상기 제1 반도체 소스/드레인 구조 위의 유전체 층 내의 트렌치의 측벽들을 따라 있고, 상기 트렌치는 상기 제1 반도체 소스/드레인 구조의 일부를 노출시키고, 상기 트렌치의 측벽들을 따른 상기 금속 콘택 재료의 두께는 상기 제1 반도체 소스/드레인 구조로부터 상기 제1 반도체 소스/드레인 구조 위의 위치까지 얇아지는, 집적 회로 구조.
- 제19항에 있어서,
상기 트렌치 내의 상기 금속 콘택 재료 상의 도전성 충전 재료를 추가로 포함하는, 집적 회로 구조. - 제11항에 있어서,
최상부 및 측벽들을 갖는 제2 반도체 핀 - 상기 게이트 전극은 또한 상기 제2 반도체 핀의 일부의 측벽들에 인접하고 상기 최상부 위에 있고, 상기 게이트 전극은 상기 제2 반도체 핀 내에 채널 영역을 정의함 -;
상기 게이트 전극의 상기 제1 측면에 있는 상기 제2 반도체 핀의 채널 영역의 제1 단부에 있는 제3 반도체 소스/드레인 구조 - 상기 제3 반도체 소스/드레인 구조는 평평하지 않은 토포그래피를 가짐 -; 및
상기 게이트 전극의 상기 제2 측면에 있는 상기 제2 반도체 핀의 채널 영역의 제2 단부에 있는 제4 반도체 소스/드레인 구조를 추가로 포함하고, 상기 제2 단부는 상기 제1 단부의 반대편에 있고, 상기 제4 반도체 소스/드레인 구조는 평평하지 않은 토포그래피를 갖고, 상기 금속 콘택 재료는 상기 제3 반도체 소스/드레인 구조 바로 위에 그리고 상기 제4 반도체 소스/드레인 구조 바로 위에 있고, 상기 금속 콘택 재료는 상기 제3 반도체 소스/드레인 구조의 평평하지 않은 토포그래피와 등각이고 상기 제4 반도체 소스/드레인 구조의 평평하지 않은 토포그래피와 등각이고, 상기 금속 콘택 재료는 상기 제1 반도체 소스/드레인 구조와 상기 제3 반도체 소스/드레인 구조 사이에서 연속적이고 상기 제2 반도체 소스/드레인 구조와 상기 제4 반도체 소스/드레인 구조 사이에서 연속적인, 집적 회로 구조. - 집적 회로 구조를 제조하는 방법으로서, 상기 방법은:
RF 소스를 갖는 화학 기상 증착(CVD) 챔버 내에 기판을 제공하는 단계 - 상기 기판은 그 위에 반도체 피처를 가지고, 상기 반도체 피처는 평평하지 않은 토포그래피를 갖는 일부를 가짐 -; 및
사염화 티타늄(TiCl4)과 수소(H2)를 반응시켜 상기 반도체 피처의 평평하지 않은 토포그래피 상에 등각인 티타늄 층을 형성하는 단계를 포함하고, 상기 반응은 섭씨 400-500도 범위의 온도에서, 0.2-2 Torr 범위의 압력에서, 그리고 대략 400 kHz 또는 대략 13.56 MHz의 RF 주파수에서 수행되고, 상기 티타늄 층은 98% 이상의 티타늄 및 0.5-2%의 염소를 포함하는 총 원자 조성을 갖는, 방법. - 제22항에 있어서, 상기 반도체 피처는 반도체 소스/드레인 구조이고, 상기 티타늄 층은 상기 반도체 소스/드레인 구조를 위한 도전성 콘택 층인, 방법.
- 제22항에 있어서, 상기 반도체 피처의 일부의 평평하지 않은 토포그래피는 상승된 중앙 부분 및 하부 측면 부분들을 포함하는, 방법
- 제22항에 있어서, 상기 반도체 피처의 일부의 평평하지 않은 토포그래피는 안장 형상 부분을 포함하는, 방법.
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