太阳电池新型光吸收层CuSb(Se,S)2薄膜的电沉积预制层后硫化法制备及器件特性研究

项目名称： 太阳电池新型光吸收层CuSb(Se,S)2薄膜的电沉积预制层后硫化法制备及器件特性研究

项目编号： No.51272292

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 赖延清

作者单位： 中南大学

项目金额： 80万元

中文摘要： CuSb（Se,S）2是一种我国具有资源优势的薄膜太阳电池新型光吸收层材料，有望替代CuIn1-xGaxSe2（CIGS），解决CIGS薄膜太阳电池发展中存在资源稀贵短缺的难题。本项目率先采用电沉积预制层CuSbSe2后硫化法制备CuSb(Se,S)2薄膜，揭示其电沉积生长-高温硫化形成机理，阐明薄膜成分、结构和性能相互关系，建立质量可控的CuSb（Se,S）2薄膜制备技术原型；试制CuSb(Se,S)2薄膜太阳电池并研究其光电转换特性和效率损失机制，确定CuSb(Se,S)2薄膜用作太阳电池光吸收层的理想化学计量组成及结构要求，形成CuSb(Se, S)2薄膜太阳电池的技术原型，获得转化效率高于5%的CuSb(Se,S)2太阳电池器件。项目研究将形成新型CuSb(Se,S)2薄膜太阳电池的自主知识产权，对增值利用我国具有显著优势的Sb资源，推动太阳电池低成本制造与大规模应用具有重要意义。

中文关键词： CuSb(Se;S)2；Sb2Se3；薄膜太阳电池；硫化；光电化学沉积

英文摘要： CuSb(Se,S)2 is a kind of a novel absorber layer material for thin film solar cells which our country have clear resource advantage. It is expected to replace CuIn1-xGaxSe2（CIGS）in thin film solar cells because of solving the problem of resource shortage restricted the development of CIGS solar cells. In this project, CuSb(Se,S)2 thin films will be prepared by sulfurization of electrodeposited CuSbSe2 precursors for the first time. Firstly, the electrodeposition mechanism of precursors and the formation mechanism of CuSb(Se,S)2 during the sulfurization stage will be revealed; The relationship of composition and structure to the properties of thin films will be illustrated; Based on the above results, the technical prototype for the fabrication of quality controllable CuSb(Se,S)2 thin films will be bulit. Secondly, CuSb(Se,S)2 thin film solar cells will be fabricated, and their photoelectric conversion characteristics and the efficient loss mechanisms will be studied; Then, the most suitable chemical stoichiometric composition and structure for use as absorber layer material in thin film solar cells will be determined; The technical prototype for devices fabrication will be formed, and more than 5% conversion efficiency of CuSb(Se,S)2 thin film solar cell will be obtained. The achievements of this project will hav

英文关键词： CuSb(Se;S)2；Sb2Se3；thin film solar cell；sulfurization；photoelectrodeposition