基于CuSe的快速热处理硒化工艺研究

项目名称： 基于CuSe的快速热处理硒化工艺研究

项目编号： No.51302303

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 李朝晖

作者单位： 中国科学院深圳先进技术研究院

项目金额： 25万元

中文摘要： 铜铟镓硒（CIGS）是第二代薄膜太阳能产品中最有前途的电池，也是未来光伏太阳能电池的主流产品。快速热处理硒化工艺是一种最有潜力的CIGS制备方法。但是国内以此工艺制备的CIGS电池性能却远远落后于国际水平，其主要原因在于对快速硒化工艺的核心技术研究不够深入。在本课题中，我们将"液态-固态"薄膜生长模式理论与快速热处理工艺相结合，提出在快速热处理过程中利用低熔点的CuSe为助熔剂的"液态-固态"生长模式来制备CIGS：在快速加热过程中形成稳定的CuSe并确保在高温下以液态形式长时间地维持，确保CIGS在液态CuSe的作用下以"液态-固态"模式生长，以制备高质量CIGS薄膜及高效率电池。总结并建立快速硒化工艺的基于CuSe的CIGS"液态-固态"成长机制，为CIGS及新一代铜锌锡硫薄膜太阳能电池的制备提供理论参考。

中文关键词： 铜铟镓硒；薄膜太阳能电池；硒化；快速退火；

英文摘要： Cu(In,Ga)Se2 (CIGS)-based solar cells have been touted as the most promising thin film solar cell technology for the cost-effective power generation. And the selenization using the rapid thermal process (RTP) is the most promising formation technology for CIGS absorber. When compared with other countries, however, it is also at low level for the RTP-selenized CIGS solar cells at home due to lack of key techniques. In this project, we propose a new approach to prepare the CIGS film based on the "liquid-solid" growth module for RTP process where the CuSe acts as a flux agent. We fulfill the formation of CuSe-phase without any decomposition and prevent the formation of other secondary pahse such as Cu2Se during RTP process. Meanwhile we also fulfill the presence of liquid CuSe at higher temperature before it is consumed completely to CIGS. So, the CIGS films grow under the "liquid-solid" module and the high-quality CIGS films are formed. Using it as a base, we summarize the mechanism of the CIGS "liquid-solid" growth module for the RTP selenization where the CuSe acts as the flux agent. We think the mechanism is important not only for the R&D of RTP selenized CIGS, but also for the formation of the next generation of thin film solar cells such as Cu2ZnSnS4 (CZTS).

英文关键词： thin film solar cell；Cu(In;Ga)Se2；selenization；rapid thermal annealing；