CZTSe-Based Solar Cell Performance Improvement Using the CSLO Technique

Applied Sciences

Serveh Rahimi¹  Mostafa Shooshtari² 

[1] Department of Electrical Engineering, K N Toosi University of Technology, Tehran 1631714191, Iran;Laboratory of Electronic Components, Department of Microelectronics, Technology and Materials (ECTM), Delft University of Technology, 2628 CD Delft, The Netherlands;

关键词: solar cell;    CZTS;    CZGeSe;    CZSiSe;    CZTSe;    ITO;   

DOI  :  10.3390/app12094119

来源: DOAJ

【 摘 要 】

Here we investigated a novel layer-based optimization technique to improve the performance of a CZTSe solar cell. By using this technique, the optical behavior and electrical properties of the proposed solar cell improved significantly as a result of the changes in the layer specifications and the layer materials. The structure of the cell consisted of an absorber laid on a conducting layer and covered by Indium Tin Oxide (ITO), with ZnO on its top surface. Due to the employment of the CSLO technique, a p⁺pn junction was formed between the absorber and window layers, which provided a lower recombination rate by transmitting more electrons and holes to the contacts. In addition, the main important parameters affecting the solar cell’s performance such as layer thickness, carrier lifetime, and total effect density were investigated. According to the results, the proposed CZTSe solar cell achieved a 32.6% and 79.5% efficiency and fill factor, respectively—which in comparison to a conventional solar cell is remarkable. Moreover, hybrid structures made by utilizing CZTS-based, Ge-based Cu₂ZnGeSe₄, and Si-based Cu₂ZnSiSe₄ with the proposed CZTSe-based solar cell were implemented and better results were achieved, yielding an efficiency of about 42, 50, and 34% and a fill factor of 66, 55, and 42%, respectively, due to the materials’ properties.

【 授权许可】

Unknown