한국신재생에너지학회:학술대회논문집
- 한국신재생에너지학회 2006년도 춘계학술대회
- /
- Pages.183-186
- /
- 2006
결정질 실리콘 태양전지의 광학적 손실 감소를 위한 표면구조 개선에 관한 연구
Investigation of the surface structure improvement to reduce the optical losses of crystalline silicon solar cells
초록
Reduction of optical losses in crystalline silicon solar cells by surface modification is one of the most important issues of silicon photovoltaics. Porous Si layers on the front surface of textured Si substrates have been investigated with the aim of improving the optical losses of the solar cells, because an anti-reflection coating and a surface passivation can be obtained simultaneously in one process. We have demonstrated the feasibility of a very efficient porous Si AR layer, prepared by a simple, cost effective, electrochemical etching method. Silicon p-type CZ (100) oriented wafers were textured by anisotropic etching in sodium carbonate solution. Then, the porous Si layer were formed by electrochemical etching in HF solutions. After that, the properties of porous Si in terms of morphology, structure and reflectance are summarized. The surface morphology of porous Si layers were investigated using SEM. The formation of a porous Si layer about
키워드