Wide Spectrum Absorption of CuGaS2 with Intermediate Bands

摘要：

The intermediate bands materials CuGa1-χQχS2 (Q = Ge, Sn) were investigated, and the narrow half-filled intermediate bands were successfully introduced into the chalcopyrite CuGaS2 when Ga3+ ion were partially replaced by Ge4+(Sn4+) impurities. The absorption edge of CuGa1-χQχS2 red shifts greatly with the increasing in the doping content due to the form of Ge-4s (Sn-5s) and S-3p hybridization orbits intermediate band, even small Qdoping content(2mol ％), considerable red shifts are still achieved. CuGa1-χQχS2 (Q = Ge, Sn) with IBs extend the range of solar spectrum and could be the excellent candidates for the theoretical predictions of enhanced solar cell efficiency.

关键词： intermediate bands material CuGaS2 wide spectrum response.

作者: Ming-Sheng Qin Fu-Qiang Huang Ping Chen

作者单位: State Key Laboratory of High Performance Ceramics and Superfine Microstructure and CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

会议类型: 国际会议

会议名称: 2011 International Conference on Machanical Engineering,Materials and Energy(2011年机械工程、材料与能源国际会议 ICMEME 2011)

会议地点: 大连

会议语种:英文

页码: 1558-1561

在线出版日期: 2011-10-19（万方平台首次上网日期，不代表论文的发表时间）