溶液法制备Cu2ZnSnS4纳米晶体薄膜太阳能电池

项目名称： 溶液法制备Cu2ZnSnS4纳米晶体薄膜太阳能电池

项目编号： No.21271179

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 李良

作者单位： 上海交通大学

项目金额： 78万元

中文摘要： 以 Cu2ZnSnS4(CZTS)薄膜太阳能电池为研究对象，研究一种普适的溶液法制备无机太阳能电池的方法。基于量子点的溶胶法合成知识，选择合适的短链有机配体和溶剂，将铜、锌、锡和硫无机物前驱体溶解并形成稳定的反应前体溶液，旋转涂制（印刷、喷雾）此溶液于基材，所形成的前驱体薄膜在较温和的条件下加热分解形成Cu2ZnSnS4纳米晶体薄膜（更高温度加热可获得结晶度更高的体材薄膜）。希望通过对材料合成和器件制备各环节的实验研究，探索出反应条件、材料成分、结构、结晶度等因素对材料能带结构和电池性能的影响规律。优化太阳能电池结构，最终获得较高太阳能光转换效率。为我国溶液法制备太阳能电池的研究提供新的思路，推动我国溶液法制备太阳能电池技术的发展。

中文关键词： 量子点；铜锌锡硫；薄膜；光伏器件；环境污染物治理

英文摘要： Cu2ZnSnS4 (CZTS) is one of the most promising absorber layer materials for low cost thin film solar cell. CZTS has a suitable optical bandgap of 1.5 eV and a large absorption coefficient. Futhermore, the constituent elements of CZTS are abundant and therefore low-cost non-toxic elements. In this proposal, we will try to develop a a solution process for fabricating inorganic Cu2ZnSnS4 thin film solar cell. The whole project includes the liquidation of the inorganic Cu, Zn, Sn, S precursors; fabrication of solar cells and solar cell performance charaterizations. Firstly,some suitable short organic ligands and solvents will be selected to dissovle the Cu, Zn, Sn and S inorganic precursors, and then form stable precursors solutions. The resulted solution will be spun coated (or sprayed, printed…)on subtractes like ITO glass or Molybdenum panel to form a precursors (monomers) thin film. Under mild heating, the monomers (precursors) film will be converted to inorganic nanocrystals thin film, further heating at higher temperature can form bulk thin film Cu2ZnSnS4. Use a similar way, a second layer of N-ype semiconductor (CdS,ZnO, ZnS...) can be deposited on the top of Cu2ZnSnS4. After deposition of metal contact, the performance of solar cell device will be characterized by PCE, IPCE, SEM,TEM and so on. We hopefully

英文关键词： quantum dots；copper zinc tin sulfur；thin film；photovoltaic devices；Environmental pollution control