文献类型：期刊文献

英文题名：Highly efficient, stable and reproducible CdSe-sensitized solar cells using copper sulfide as counter electrodes

作者：Zhang, Hua[1];Bao, Huili[1];Zhong, Xinhua[1]

机构：[1]E China Univ Sci & Technol, Inst Appl Chem, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2015

卷号：3

期号：12

起止页码：6557

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20151100640109);WOS:【SCI-EXPANDED(收录号:WOS:000351227300043)】；

基金：We thank the National Natural Science Foundation of China (no. 21175043 and no. 21421004), the Science and Technology Commission of Shanghai Municipality (11JC1403100, 12ZR1407700, 12NM0504101) and the Fundamental Research Funds for the Central Universities for financial support.

语种：英文

外文关键词：Solar cells - Charge transfer - Efficiency - Screen printing - Sulfur compounds - Electrochemical electrodes - Electrolytes - II-VI semiconductors - Interfaces (materials) - Sintering - Cadmium compounds - Semiconductor devices

摘要：A mixture composed of CuS and Cu1.8S has been easily fabricated via a solvothermal method followed by screen-printing to form a counter electrode. A highly reproducible record efficiency of 6.28% for the assembled CdSe-sensitized solar cells has been achieved, and the irradiation, as well as conservation stability, have also been greatly improved compared to the brass foil based solar cells. With different size and morphology, the phase of CuS shows a slightly superior performance than Cu1.8S through investigating the influence of S/Cu ratio on the efficiency. The sintering temperature of the counter electrode film has also been studied, and the results show that 400 degrees C is favorable for good conductivity, high electrochemical activity, low charge transfer resistance in a solid-solid interface and between the catalysts and electrolyte. Because of the low cost, convenient fabrication, easy of sealing, as well as the high efficiency, reproducibility and excellent stability of the devices, the as-prepared copper sulfide could be potentially and extensively utilized in semiconductor-sensitized solar cells.