文章基本信息

标题：Numerical Modeling and Simulation of CIGS-Based Solar Cells with ZnS Buffer Layer
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作者：Adama Sylla ; Siaka Touré ; Jean-Pierre Vilcot 等
期刊名称：Open Journal of Modelling and Simulation
印刷版ISSN：2327-4018
电子版ISSN：2327-4026
出版年度：2017
卷号：05
期号：04
页码：218-231
DOI：10.4236/ojmsi.2017.54016
语种：English
出版社：Scientific Research Publishing
摘要：Usually a buffer layer of cadmium sulphide is used in high efficiency solar cells based on Cu(In,Ga)Se ₂ (CIGS). Because of cadmium toxicity, many in-vestigations have been conducted to use Cd-free buffer layers. Our work focuses on this type of CIGS-based solar cells where CdS is replaced by a ZnS buffer layer. In this contribution, AFORS-HET software is used to simulate n-ZnO: Al/i-ZnO/n-ZnS/p-CIGS/Mo polycrystalline thin-film solar cell where the key parts are p-CIGS absorber layer and n-ZnS buffer layer. The characteristics of these key parts: thickness and Ga-content of the absorber layer, thickness of the buffer layer and doping concentrations of absorber and buffer layers have been investigated to optimize the conversion efficiency. We find a maximum conversion efficiency of 26% with a short-circuit current of 36.9 mA/cm ² , an open circuit voltage of 824 mV, and a fill factor of 85.5%.
关键词：Cu(In_1-xGa_x)Se₂;Thin-Film Solar Cell;Numerical Modeling;AFORS-HET Simulation;Optimization