KR20110095629A - 태양전지 및 그 제조방법 - Google Patents
태양전지 및 그 제조방법 Download PDFInfo
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- 239000010409 thin film Substances 0.000 description 16
- 229910006404 SnO 2 Inorganic materials 0.000 description 10
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 7
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 5
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- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
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Abstract
본 발명에 따르면 기판 상에 제1 배선 및 제1 버스바를 포함하여 이루어진 제1 전극을 적용함으로써, 태양전지를 단위셀 별로 분리하지 않아 레이저 스크라이빙 공정을 수행할 필요가 없고, 그에 따라 공정이 단순해지고 공정시간이 단축되며, 아울러 고가의 레이저 스크라이빙 장비가 필요치 않아 제조단가가 줄어드는 효과가 있다.
Description
도 2a 내지 도 2f는 종래의 박막형 태양전지의 제조공정을 도시한 개략적인 단면도이다.
도 3은 본 발명의 일 실시예에 따른 태양전지의 개략적인 사시도이다.
도 4는 본 발명의 다른 실시예에 따른 태양전지의 개략적인 사시도이다.
도 5a 내지 도 5e는 본 발명의 일 실시예에 따른 태양전지의 제조공정을 도시한 개략적인 공정 사시도이다.
210: 제1 배선 220: 제1 버스바
300: 제1 투명도전층 400: 반도체층
401: 제1 반도체층 402: 버퍼층
403: 제2 반도체층 500: 제2 투명도전층
610: 제2 배선 620: 제2 버스바
Claims (22)
- 기판;
상기 기판 위에 형성되며, 소정 간격으로 배열된 복수 개의 제1 배선들 및 상기 복수 개의 제1 배선들과 연결되는 제1 버스바로 이루어진 제1 전극;
상기 제1 전극 상에 형성된 제1 투명도전층;
상기 제1 투명도전층 상에 형성된 반도체층; 및
상기 반도체층 상에 형성된 제2 전극을 포함하여 이루어진 태양전지. - 제1항에 있어서,
상기 제1 버스바는 상기 제1 배선들과 수직으로 교차하도록 배열된 것을 특징으로 하는 태양전지. - 제1항에 있어서,
상기 제1 배선의 폭은 3 내지 10mm 범위이고, 상기 제1 버스바의 폭은 상기 제1 배선의 폭보다 큰 것을 특징으로 하는 태양전지. - 제1항에 있어서,
상기 제2 전극은 상기 반도체층 상에 형성된 제2 투명도전층을 포함하여 이루어진 것을 특징으로 하는 태양전지. - 제4항에 있어서,
상기 제2 전극은 상기 제2 투명도전층 상에서 소정 간격으로 배열된 복수 개의 제2 배선들 및 상기 복수 개의 제2 배선들과 연결되는 제2 버스바를 포함하여 이루어진 것을 특징으로 하는 태양전지. - 제5항에 있어서,
상기 제2 버스바는 상기 제2 배선들과 수직으로 교차하도록 배열된 것을 특징으로 하는 태양전지. - 제5항에 있어서,
상기 제2 배선의 폭은 3 내지 10mm 범위이고, 상기 제2 버스바의 폭은 상기 제2 배선의 폭보다 큰 것을 특징으로 하는 태양전지. - 제5항에 있어서,
상기 제1 버스바 및 제2 버스바 중 적어도 하나는 복수 개가 형성된 것을 특징으로 하는 태양전지. - 제1항에 있어서,
상기 반도체층은 상기 제1 투명도전층 상에 형성된 N형 반도체층, 상기 N형 반도체층 상에 형성된 I형 반도체층, 및 상기 I형 반도체층 상에 형성된 P형 반도체층으로 이루어진 것을 특징으로 하는 태양전지. - 제1항에 있어서,
상기 반도체층은 버퍼층을 사이에 두고 형성된 제1 반도체층 및 제2 반도체층으로 이루어진 것을 특징으로 하는 태양전지. - 제1항에 있어서,
상기 기판은 플렉시블 기판으로 이루어진 것을 특징으로 하는 태양전지. - 기판 상에 소정 간격으로 배열된 복수 개의 제1 배선들 및 상기 복수 개의 제1 배선들과 연결되는 제1 버스바로 이루어진 제1 전극을 형성하는 공정;
상기 제1 전극 상에 제1 투명도전층을 형성하는 공정;
상기 제1 투명도전층 상에 반도체층을 형성하는 공정; 및
상기 반도체층 상에 제2 전극을 형성하는 공정을 포함하여 이루어진 태양전지의 제조방법. - 제12항에 있어서,
상기 제1 버스바는 상기 제1 배선들과 수직으로 교차하도록 형성하는 것을 특징으로 하는 태양전지의 제조방법. - 제12항에 있어서,
상기 제1 배선의 폭은 3 내지 10mm 범위로 형성하고, 상기 제1 버스바의 폭은 상기 제1 배선의 폭보다 크게 형성하는 것을 특징으로 하는 태양전지의 제조방법. - 제12항에 있어서,
상기 제2 전극을 형성하는 공정은 상기 반도체층 상에 제2 투명도전층을 형성하는 공정을 포함하여 이루어진 것을 특징으로 하는 태양전지의 제조방법. - 제15항에 있어서,
상기 제2 전극을 형성하는 공정은 상기 제2 투명도전층 상에 소정 간격으로 배열된 복수 개의 제2 배선들 및 상기 복수 개의 제2 배선들과 연결되는 제2 버스바를 형성하는 공정을 포함하는 것을 특징으로 하는 태양전지의 제조방법. - 제16항에 있어서,
상기 제2 버스바는 상기 제2 배선들과 수직으로 교차하도록 형성하는 것을 특징으로 하는 태양전지의 제조방법. - 제16항에 있어서,
상기 제2 배선의 폭은 3 내지 10mm 범위로 형성하고, 상기 제2 버스바의 폭은 상기 제2 배선의 폭보다 크게 형성하는 것을 특징으로 하는 태양전지의 제조방법. - 제16항에 있어서,
상기 제1 버스바 및 제2 버스바 중 적어도 하나는 복수 개를 형성하는 것을 특징으로 하는 태양전지의 제조방법. - 제12항에 있어서,
상기 반도체층을 형성하는 공정은 상기 제1 투명도전층 상에 N형 반도체층을 형성하고, 상기 N형 반도체층 상에 I형 반도체층을 형성하고, 그리고 상기 I형 반도체층 상에 P형 반도체층을 형성하는 공정으로 이루어진 것을 특징으로 하는 태양전지의 제조방법. - 제12항에 있어서,
상기 반도체층을 형성하는 공정은 상기 제1 투명도전층 상에 제1 반도체층을 형성하는 공정, 상기 제1 반도체층 상에 버퍼층을 형성하는 공정, 및 상기 버퍼층 상에 제2 반도체층을 형성하는 공정으로 이루어진 것을 특징으로 하는 태양전지의 제조방법. - 제12항에 있어서,
상기 기판은 플렉시블 기판으로 이루어진 것을 특징으로 하는 태양전지의 제조방법.
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