KR101879363B1 - 태양 전지 제조 방법 - Google Patents
태양 전지 제조 방법 Download PDFInfo
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Abstract
본 발명의 일례에 따른 태양 전지 제조 방법은 반도체 기판의 표면에 진성 비정질 실리콘층을 증착시키는 단계; 진성 비정질 실리콘층 위에 불순물이 함유된 비정질 실리콘층을 증착하여 도전형 영역을 형성하는 단계; 및 도전형 영역에 전기적으로 연결되는 전극을 형성하는 단계;를 포함하고, 진성 비정질 실리콘층을 증착하는 단계에서는 진성 비정질 실리콘층이 반도체 기판의 표면에 0.5nm/sec ~ 2nm/sec 사이의 증착 속도로 증착된다.
Description
도 2는 도 1에서 K 부분확대 도시한 도이다.
도 3은 본 발명의 일례에 따른 태양 전지 제조 방법을 설명하기 위한 도이다.
도 4는 도 3에서 반도체 기판(110)의 표면에 진성 비정질 실리콘을 증착시킬 때, 증착 속도에 따른 태양 전지의 에너지 밴드갭을 설명하기 위한 실혐예이다.
도 5는 도 3에서 반도체 기판(110)의 표면에 진성 비정질 실리콘을 증착시킬 때, 증착 속도에 따른 디펙 농도(defect density)를 설명하기 위한 실험예이다.
도 6은 도 3에서 반도체 기판의 표면에 진성 비정질 실리콘을 증착시킬 때, 증착 장비의 파워(power density)와 증착 속도와의 관계를 설명하기 위한 실험예이다.
도 7은 도 3에서 반도체 기판의 표면에 진성 비정질 실리콘을 증착시킬 때, 실란(SiH4) 가스양[Sccm] 대비 수소(H2) 가스양[Sccm]의 희석 비율과 증착 속도와의 관계를 설명하기 위한 실험예이다.
도 8은 제1, 2 진성 비정질 실리콘층의 증착 속도를 다르게 하는 효과를 설명하기 위한 종래 밴드 다이어그램의 일례이다.
Claims (9)
- 반도체 기판의 제1 면 및 제2 면 표면에 제1 및 제2 진성 비정질 실리콘층을 증착시키는 단계;
상기 진성 비정질 실리콘층 위에 불순물이 함유된 비정질 실리콘층을 증착하여 도전형 영역을 형성하는 단계; 및
상기 도전형 영역에 전기적으로 연결되는 전극을 형성하는 단계;를 포함하고,
상기 진성 비정질 실리콘층을 증착하는 단계에서는 상기 진성 비정질 실리콘층이 상기 반도체 기판의 표면에 0.5nm/sec ~ 2nm/sec 사이의 증착 속도로 증착되고,
상기 도전형 영역을 형성하는 단계는
상기 불순물이 함유된 비정질 실리콘층을 상기 반도체 기판의 제1 면에 형성된 상기 진성 비정질 실리콘층 위에 형성하는 제1 도전형 영역 형성 단계와
상기 제1 도전형 영역에 함유된 불순물과 반대인 상기 불순물이 함유된 비정질 실리콘층을 상기 반도체 기판의 제2 면에 형성된 상기 진성 비정질 실리콘층 위에 형성하는 제2 도전형 영역 형성 단계를 포함하고,
상기 제1 도전형 영역은 상기 제1 진성 비정질 실리콘층을 사이에 두고, 상기 반도체 기판과 p-n 접합을 형성하며,
상기 제1 진성 비정질 실리콘층의 증착 속도는 상기 제2 진성 비정질 실리콘층의 증착 속도보다 빠른 태양 전지 제조 방법. - 제1 항에 있어서,
상기 진성 비정질 실리콘층을 증착하는 장비의 파워는 60㎽/㎠ ~ 150㎽/㎠ 사이인 태양 전지 제조 방법. - 제1 항에 있어서,
상기 진성 비정질 실리콘층을 증착하기 위한 실란(SiH4) 가스양[Sccm] 대비 수소(H2) 가스양[Sccm]의 비율은 1:1 ~ 100 사이인 태양 전지 제조 방법. - 제1 항에 있어서,
상기 진성 비정질 실리콘층을 증착하는 단계의 공정 온도는 100℃ ~ 200℃ 사이인 태양 전지 제조 방법. - 삭제
- 삭제
- 제1 항에 있어서,
상기 도전형 영역을 형성하는 단계와 상기 전극을 형성하는 단계 사이에 투명 전극층(Transparent Conducting Oxide, TCO)을 상기 도전형 영역 위에 형성하는 단계를 더 포함하고,
상기 전극 형성 단계에서 상기 전극은 상기 투명 전극층에 접속하는 태양 전지 제조 방법. - 삭제
- 삭제
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KR1020170008116A KR101879363B1 (ko) | 2017-01-17 | 2017-01-17 | 태양 전지 제조 방법 |
US15/866,052 US10593558B2 (en) | 2017-01-17 | 2018-01-09 | Method of manufacturing solar cell |
EP18150978.7A EP3349257B1 (en) | 2017-01-17 | 2018-01-10 | Method of manufacturing solar cell |
JP2018004924A JP6567705B2 (ja) | 2017-01-17 | 2018-01-16 | 太陽電池の製造方法 |
CN201810039075.9A CN108336170B (zh) | 2017-01-17 | 2018-01-16 | 制造太阳能电池的方法 |
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CN112531052B (zh) * | 2020-12-28 | 2022-03-22 | 苏州腾晖光伏技术有限公司 | 异质结电池结构及其制备方法 |
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US10593558B2 (en) | 2020-03-17 |
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