KR20190064382A - 핀 다이오드 구조물 및 그 방법 - Google Patents
핀 다이오드 구조물 및 그 방법 Download PDFInfo
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Abstract
Description
도 1은 본 발명의 하나 이상의 양상에 따른 FinFET 디바이스의 실시예의 사시도이다.
도 2는 일부 실시예에 따른 핀 하단 다이오드를 형성하는 방법의 흐름도이다.
도 3 내지 도 12는 도 2의 방법에 따라 처리되는 제조 중간 단계에서의 디바이스의 단면도를 제공한다.
도 13은 일부 실시예에 따른 핀 하단 다이오드를 형성하는 대안의 방법의 흐름도이다.
도 14 내지 도 25는 도 13의 방법에 따라 처리되는 제조 중간 단계에서의 디바이스의 단면도를 제공한다.
Claims (10)
- 반도체 디바이스를 제조하는 방법에 있어서,
기판으로부터 연장되는 복수의 핀들을 갖는 상기 기판을 제공하는 단계 - 상기 복수의 핀들 각각은 기판 부분 및 상기 기판 부분 위의 에피택셜 층 부분을 포함함 - ;
상기 복수의 핀들 각각의 상기 기판 부분의 제 1 영역의 측벽 상에 제 1 도펀트 층을 형성하는 단계;
상기 제 1 도펀트 층을 형성하는 단계 후에, 상기 복수의 핀들 각각의 상기 기판 부분의 상기 제 1 영역 내에 제 1 다이오드 영역을 형성하기 위해 제 1 어닐링 공정을 수행하는 단계;
상기 복수의 핀들 각각의 상기 기판 부분의 제 2 영역의 측벽 상에 제 2 도펀트 층을 형성하는 단계;
상기 제 2 도펀트 층을 형성하는 단계 후에, 상기 복수의 핀들 각각의 상기 기판 부분의 상기 제 2 영역 내에 제 2 다이오드 영역을 형성하기 위해 제 2 어닐링 공정을 수행하는 단계
를 포함하는, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 복수의 핀들 각각은 상기 기판 부분, 상기 기판 부분 위의 상기 에피택셜 층 부분, 및 상기 에피택셜 층 부분 위의 캡핑 층 부분을 포함하는 것인, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 복수의 핀들 각각의 상기 기판 부분의 상기 제 1 영역의 측벽 및 상기 복수의 핀들 사이에 개재된 리세스의 하단 표면 상에 상기 제 1 도펀트 층을 형성하는 단계
를 더 포함하는, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 제 2 도펀트 층을 형성하는 단계 전에, 상기 복수의 핀들 사이에 개재된 리세스 내에 산화물 층을 형성하는 단계
를 더 포함하고, 상기 산화물 층은 상기 제 1 도펀트 층 위에 배치되는 것인, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 제 2 어닐링 공정을 수행하는 단계 전에, 상기 복수의 핀들 사이에 개재된 리세스 내에 산화물 층을 형성하는 단계
를 더 포함하고, 상기 산화물 층은 상기 제 2 도펀트 층 위에 배치되는 것인, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 제 1 도펀트 층 및 상기 제 2 도펀트 층은 포스포-실리케이트 글라스(PSG), 보로-실리케이트 글라스(BSG) 또는 보로-포스포-실리케이트 글라스(BPSG)를 포함하는 것인, 반도체 디바이스 제조 방법. - 제 1 항에 있어서,
상기 제 1 다이오드 영역은 상기 제 1 도펀트 층으로부터 상기 복수의 핀들 각각의 상기 기판 부분의 상기 제 1 영역으로 제 1 도펀트 종을 확산시킴으로써 형성되고, 상기 제 2 다이오드 영역은 상기 제 2 도펀트 층으로부터 상기 복수의 핀들 각각의 상기 기판 부분의 상기 제 2 영역으로 제 2 도펀트 종을 확산시킴으로써 형성되는 것인, 반도체 디바이스 제조 방법. - 반도체 디바이스를 제조하는 방법에 있어서,
제 1 핀 구조물, 제 2 핀 구조물, 및 상기 제 1 핀 구조물과 상기 제 2 핀 구조물 사이에 개재된 리세스를 갖는 기판을 제공하는 단계 - 상기 제 1 및 제 2 핀 구조물 각각은 제 1 영역 및 상기 제 1 영역 위에 형성된 제 2 영역을 포함함 - ;
상기 제 1 핀 구조물 및 상기 제 2 핀 구조물 각각의 위와, 상기 제 1 핀 구조물과 상기 제 2 핀 구조물 사이에 개재된 상기 리세스의 하단 표면 상에 컨포멀하게 제 1 도펀트 층을 형성하는 단계;
상기 제 1 도펀트 층을 형성하는 단계 후에, 상기 리세스 내에 제 1 산화물 층을 형성하고 상기 제 1 및 제 2 핀 구조물의 상기 제 1 영역의 제 1 부분과 상기 제 1 및 제 2 핀 구조물의 상기 제 2 영역 모두의 측벽을 노출시키기 위해 제 1 에치-백(etch-back) 공정을 수행하는 단계 - 상기 제 1 도펀트 층은 상기 제 1 및 제 2 핀 구조물의 상기 제 1 영역의 제 2 부분의 측벽 상에 남아있음 - ; 및
상기 제 1 에치-백 공정을 수행하는 단계 후에, 상기 제 1 도펀트 층으로부터 상기 제 1 영역의 상기 제 2 부분으로 제 1 도펀트 종을 확산시키기 위해 제 1 어닐링 공정을 수행하는 단계 - 상기 제 1 영역의 상기 제 2 부분은 제 1 다이오드 영역을 규정함 -
를 포함하는, 반도체 디바이스 제조 방법. - 반도체 디바이스에 있어서,
기판으로부터 연장되는 제 1 핀 및 제 2 핀을 갖는 상기 기판 - 상기 제 1 핀 및 상기 제 2 핀 각각은 기판 부분, 및 상기 기판 부분 위의 에피택셜 층 부분을 포함함 - ; 및
상기 제 1 핀 및 상기 제 2 핀 각각의 상기 기판 부분 내에 형성된 P-N 다이오드
를 포함하고,
상기 P-N 다이오드는 상기 제 1 핀 및 상기 제 2 핀 각각의 상기 기판 부분의 제 1 영역 내에 제 1 도펀트 종을 포함하고, 상기 P-N 다이오드는 상기 제 1 핀 및 상기 제 2 핀 각각의 상기 기판 부분의 제 2 영역 내에 제 2 도펀트 종을 포함하며, 상기 기판 부분의 상기 제 1 영역 및 상기 제 2 영역은 서로 인접하고,
상기 제 1 핀과 상기 제 2 핀 사이에 개재된 상기 기판의 부분은 상기 제 1 도펀트 종 및 상기 제 2 도펀트 종에 의해 도핑되지 않은 채로 남아있는 것인, 반도체 디바이스. - 제 9 항에 있어서,
상기 제 1 핀 및 상기 제 2 핀 각각의 상기 에피택셜 층 부분 위에 형성된 캡핑 층 부분
을 더 포함하는, 반도체 디바이스.
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