KR100933598B1 - 태양전지의 유해한 분극화의 방지 - Google Patents
태양전지의 유해한 분극화의 방지 Download PDFInfo
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- KR100933598B1 KR100933598B1 KR1020077019044A KR20077019044A KR100933598B1 KR 100933598 B1 KR100933598 B1 KR 100933598B1 KR 1020077019044 A KR1020077019044 A KR 1020077019044A KR 20077019044 A KR20077019044 A KR 20077019044A KR 100933598 B1 KR100933598 B1 KR 100933598B1
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Abstract
Description
Claims (19)
- 전방측 및 후방측을 구비하는 태양전지 - 상기 태양전지의 전방측은 정상 동작 동안에 태양을 향함 -에 있어서,상기 태양전지의 후방측 상에 형성된 복수의 금속 컨택트 - 상기 각 금속 컨택트는 상기 태양전지의 대응하는 p형 도핑되거나 n형 도핑된 수집 영역에 결합됨 -;상기 태양전지의 전방측을 향하는 실리콘 웨이퍼의 표면 위에 형성된 유전체 패시베이션 층;상기 유전체 패시베이션 층 상에 형성된 반사 방지 코팅; 및상기 실리콘 웨이퍼 외부에 있는 횡방향 도전성 경로 - 상기 도전성 경로는 전하를 상기 태양전지의 전방측에 있는 상기 유전체 패시베이션 층으로부터 상기 실리콘 웨이퍼로 흘림으로써 상기 태양전지의 유해한 분극화를 방지하도록 구성되며 상기 도전성 경로는 상기 유전체 패시베이션 층에서 정상 동작 동안 태양을 향하는 측면에 있음 -를 포함하는 태양전지.
- 제1항에 있어서, 상기 도전성 경로는 상기 유전체 패시베이션 층을 포함하고, 상기 유전체 패시베이션 층은 10Å 내지 20Å의 두께를 가지는 실리콘 다이옥사이드를 포함하는 태양전지.
- 제1항에 있어서, 상기 도전성 경로는 상기 유전체 패시베이션 층을 통해 패터닝된 홀을 포함하는 태양전지.
- 제1항에 있어서, 상기 도전성 경로는 정상 동작 동안에 태양을 향하는 반사 방지 코팅의 표면 상에 바로 형성된 도전성 코팅을 포함하는 태양전지.
- 제1항에 있어서, 상기 반사 방지 코팅은 상기 유전체 패시베이션 층의 자연적(natural) 결함을 통해 전하가 웨이퍼의 몸체로 흐르도록 도전성있게 구성되는 태양전지.
- 제5항에 있어서, 상기 반사 방지 코팅은 금속 불순물로 도핑된 반사 방지 재료를 포함하는 태양전지.
- 제5항에 있어서, 상기 반사 방지 코팅은 본질적으로 도전성인 태양전지.
- 제1항에 있어서, 상기 반사 방지 코팅의 표면 상에 바로 형성된 도전성 재료층을 더 포함하는 태양전지.
- 제1항에 있어서, 상기 반사 방지 코팅과 상기 유전체 패시베이션 층의 사이에 형성된 도전성 재료층을 더 포함하는 태양전지.
- 제9항에 있어서, 상기 도전성 재료층은 상기 유전체 패시베이션 층의 표면과 상기 반사 방지 코팅의 표면을 직접 컨택트하는 태양전지.
- 태양전지 모듈에 있어서,a) 직렬로 접속된 복수의 태양전지 - 상기 복수의 태양전지의 적어도 하나의 태양전지는 전방측 및 후방측을 구비하고 상기 태양전지의 전방측은 정상 동작 동안에 태양을 향함 -b) 상기 복수의 태양전지를 커버하는 인캡슐런트;c) 상기 복수의 태양전지의 전방측 상의 투명 커버; 및d) 상기 투명 커버와 상기 태양전지의 전방측 사이의 전기적 도전층 - 상기 도전층은 태양전지 분극화를 방지하기 위해 상기 태양전지의 후방측 상의 금속 컨택트에 전기적으로 결합됨 -을 포함하고, 상기 태양전지는,(i) 상기 태양전지의 후방측 상에 형성된 복수의 금속 컨택트 - 상기 각 금속 컨택트는 상기 태양전지의 대응하는 p형 도핑되거나 n형 도핑된 수집 영역에 결합됨 -,(ii) 상기 태양전지의 전방측을 향하는 실리콘 웨이퍼의 표면 위에 바로 형성되는 유전체 패시베이션 층, 및(iii) 상기 유전체 패시베이션 층 상에 형성된 반사 방지 코팅을 포함하는 태양전지 모듈.
- 제11항에 있어서, 상기 투명 커버는 유리를 포함하는 태양전지 모듈.
- 제11항에 있어서, 상기 태양전지는 n형 전방측 확산 영역을 구비한 태양전지 모듈.
- 태양 에너지 시스템에 있어서,(a) 복수의 태양전지;(b) 상기 복수의 태양전지를 포함하는 태양전지 모듈 어레이 - 상기 태양전지 모듈 어레이는 양의 전압에서 양의 단자를 가지고 있고 음의 전압에서 음의 단자를 가짐 -;(c) 상기 태양전지 모듈 어레이에서 태양전지 모듈의 프레임으로의 그라운드 접속; 및(d) 상기 태양전지 모듈 어레이에 의해 생성된 직류를 교류로 변환시켜 전력 그리드에 제공되도록 구성된 인버터 - 상기 인버터는 태양전지 모듈 어레이의 양의 단자에 결합된 양의 단자, 및 상기 태양전지 모듈 어레이의 음의 단자에 결합된 음의 단자를 구비함 -를 포함하고,상기 각 태양전지는,(i) 전방측 및 후방측 - 상기 전방측은 정상 동작 동안에 태양을 향함 -,(ii) 상기 후방측 상에 형성된 복수의 금속 컨택트 - 상기 각 금속 컨택트는 상기 태양전지의 대응하는 p형 도핑되거나 n형 도핑된 수집 영역에 결합됨 -,(iii) 정상 동작 동안에 태양을 향하는 웨이퍼의 표면 상에 형성된 유전체 패시베이션 층, 및(iv) 상기 유전체 패시베이션 층 상에 형성된 반사 방지 코팅을 포함하며,상기 태양전지 모듈 어레이는 전하가 상기 태양전지의 전방측으로부터 상기 태양전지 모듈의 프레임으로 누설되는 것을 방지하도록 바이어싱되는 태양 에너지 시스템.
- 제14항에 있어서, 상기 인버터는 상기 태양전지 모듈 어레이로부터 밸런싱된 전압을 수신하도록 구성되고,전하가 상기 태양전지의 전방측으로부터 누설되는 것을 방지하도록 상기 태양전지 모듈 어레이로부터 밸런싱된 전압을 언밸런싱하도록 상기 태양전지 모듈 어레이의 단자를 그라운드에 결합시키는 저항을 더 포함하는 태양 에너지 시스템.
- 제15항에 있어서, 상기 저항은 상기 태양전지 모듈 어레이의 양의 단자를 그라운드에 결합시키는 태양 에너지 시스템.
- 제14항에 있어서, 상기 복수의 태양전지의 각 태양전지는 n형 전방측 확산 영역을 가지고 있고, 상기 태양전지 모듈 어레이는 상기 태양전지 모듈 어레이의 양의 단자를 그라운드 전위에 접속함으로써 바이어싱되는 태양 에너지 시스템.
- 제14항에 있어서, 상기 복수의 태양전지의 각 태양전지는 p형 전방측 확산 영역을 가지고 있고, 상기 태양전지 모듈 어레이는 상기 태양전지 모듈 어레이의 음의 단자를 그라운드 전위에 접속함으로써 바이어싱되는 태양 에너지 시스템.
- 제17항에 있어서, 상기 태양전지 모듈 어레이의 양의 단자는 저항을 통해 그라운드에 접속되는 태양 에너지 시스템.
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