Lightweight, thin-film Si heterojunction solar cells

✍ Scribed by W. A. Anderson; B. Jagannathan; E. Klementieva

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 206 KB
• Volume: 5
• Category: Article
• ISSN: 1062-7995
• DOI: 10.1002/(sici)1099-159x(199711/12)5:6<433::aid-pip195>3.0.co;2-p

✦ Synopsis

This approach to a thin-®lm Si solar cell combines theoretical analysis, growth of thin-®lm crystalline Si (c-Si) and deposition of amorphous Si (a-Si:H) to form the heterojunction. The PC-1D model predicts a potential eciency of 416% for an Si thickness of 10 "m. Liquid phase growth (LPG) of the base-layer c-Si gave a carrier mobility of 100 cm 2 V 71 s 71 and a lifetime of 8 "s. Microwave electron cyclotron resonance (MECR) deposition of a-Si :H onto a c-Si wafer gives over 10% photovoltaic conversion eciency. Work continues to combine MECR with LPG to give a thin-®lm Si solar cell.