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Surface Texturing and Anti-Reflection Coating of Multi-crystalline Silicon Solar Cell

다결정 실리콘 태양전지의 표면 텍스쳐링 및 반사방지막의 영향

  • Jun, Seong-Uk (Super Precision Manufacturing Process Team, Susan R&D Center, KITECH) ;
  • Lim, Kyung-Muk (Super Precision Manufacturing Process Team, Susan R&D Center, KITECH) ;
  • Choi, Sock-Hwan (Super Precision Manufacturing Process Team, Susan R&D Center, KITECH) ;
  • Hong, Yung-Myung (Super Precision Manufacturing Process Team, Susan R&D Center, KITECH) ;
  • Cho, Kyung-Mox (Department of Materials Science and Engineering, Pusan National University)
  • 전성욱 (한국생산기술연구원 초정밀 성형가공팀) ;
  • 임경묵 (한국생산기술연구원 초정밀 성형가공팀) ;
  • 최석환 (한국생산기술연구원 초정밀 성형가공팀) ;
  • 홍영명 (한국생산기술연구원 초정밀 성형가공팀) ;
  • 조경목 (부산대학교 재료공학과)
  • Published : 2007.06.30

Abstract

The effects of texturing and anti-reflection coating on the reflection properties of multi-crystalline silicon solar cell have been investigated. The chemical solutions of alkaline and acidic etching solutions were used for texturing at the surface of multi-crystalline Si wafer. Experiments were performed with various temperature and time conditions in order to determine the optimized etching condition. Alkaline etching solution was found inadequate to the texturing of multi-crystalline Si due to its high reflectance of about 25%. The reflectance of Si wafer texturing with acidic etching solution showed a very low reflectance about 10%, which was attributed to the formation of homogeneous. Also, deposition of ITO anti-reflection coating reduced the reflectance of multi-crystalline si etched with acidic solution($HF+HNO_3$) to 2.6%.

Keywords

References

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