Affiliation:
1. Institute of Photoelectronic Thin Film Devices and Technology Tianjin Key Laboratory of Thin Film Devices and Technology and Engineering Research Center of Thin Film Optoelectronics Technology Ministry of Education Nankai University Tianjin 300350 P. R. China
Abstract
AbstractSolution method provides a low‐cost and environmentally friendly route for the fabrication of Cu2ZnSn(S,Se)4 (CZTSSe) thin‐film solar cells. However, uncontrollable quality of the CZTSSe absorber layer will severely limit the device's performance. In this study, it is find that the thickness and the quality of the formed precursor is not stable because of the variation of the viscosity of the precursor solution. Combined by different characterization methods, the results disclose that such change is strongly related to the reflected color of the first coating layer during precursor growth. Further studies disclose that only by maintaining the appropriate reflected color can a well‐crystallized CZTSSe film be prepared, thereby obtaining good solar cell efficiency. This semi‐empirical pattern is confirmed by thin‐film interference theory. Under the guidance of this method, CZTSSe absorbers with high quality are obtained easily, and the highly efficient CZTSSe solar cell can be fabricated easily. This study provides a feasible and effective strategy to obtain the optimal structure and composition of CZTSSe film toward the production of highly efficient kesterite solar cells, which can also be widely applied to the preparation of other films by solution‐based method.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
General Materials Science,General Chemistry
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献