低毒廉价的乙醇溶液法制备高效铜锌锡硫硒太阳能电池

项目名称： 低毒廉价的乙醇溶液法制备高效铜锌锡硫硒太阳能电池

项目编号： No.51302258

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： 王刚

作者单位： 中国科学院长春应用化学研究所

项目金额： 25万元

中文摘要： 本项目主要利用低毒廉价的乙醇溶液法来制备高效的铜锌锡硫硒 （CZTSSe）薄膜太阳能电池。CZTSSe薄膜具有合适的带隙和高吸光系数，并且原料价格低廉、丰产和无毒，是最有发展前景的下一代薄膜太阳能电池材料之一。对于CZTSSe太阳能电池，溶液法沉积技术比真空沉积技术在转换效率和制备成本上具有明显的优势。通过改变前驱体溶液的组成，实现CZTSSe吸光层的金属元素的最优配比。再通过改变硒化的温度和硒蒸汽浓度，获得大晶粒密堆积的CZTSSe吸光层。通过优化CZTSSe太阳能电池的工艺条件，努力获得10%以上的光电转换效率。本项目具有如下优点：1.乙醇前体溶液低毒廉价安全，并且有应用价值；2. 该方法比其他的非肼前体溶液法制备的太阳能电池具有更高的光电转换效率；3.该方法操作简单、环保、实验重现性高，易于实现大规模的生产。

中文关键词： 太阳能电池；铜锌锡硫硒；溶液法；环保；廉价

英文摘要： This project deals with the fabrication of high efficiency Cu2ZnSn(S,Se)4 photovoltaic device using a harmfulless and inexpensive ethanol solution process. CZTSSe thin-film, with suitable direct band gaps and high absorption coefficient, low cost，earth-abundant and non-toxic, is one kind of the most promising next generation thin-film solar cell materials. Compared with vacuum deposition technology, solution process deposition technology has the obvious superiority in energy conversion efficiency and fabrication costs for CZTS solar cells. By changing the composition of the precursor solutions， an optimal ratio of metals will be achieved; by optimizing selenization conditions,such as changing the selenization temperature and the concentration of selenium vapor， the large densely packed grains thin films can be obtained. By optimizing the process conditions of CZTSSe solar cells, we aim to obtain the photoelectric conversion efficiency of more than 10%. The advantages of this project are as follows: 1. ethanol precursor solution is low toxicity,cheap, safe and has the application value; 2.this method has the higher photoelectric conversion efficiency than other non-hydrazide precursor solution process; 3. the method is simple, eco-friendly, and highly reproducible, which is easy to implement large-scale producti

英文关键词： Solar cells；CZTSSe；Solution process；Eco-friendly；Low-cost