This study investigates the critical role of buffer layers in enhancing the efficiency of thin-film CdTe solar cells. We explore non-toxic buffer materials, specifically ZnSe, ZnMgO, 3C-SiC, and WS2, as potential replacements for the traditional Cd-based CdS buffer layer. Our analysis includes a thorough evaluation of the electrical and optical performance of these buffer materials in conjunction with CdTe absorbers. We optimize the thickness of both the buffer and absorber layers to achieve the best performance. Additionally, we examine the impact of defect density variations in the buffer materials and their corresponding temperature effects. Among the tested materials, ZnSe and ZnMgO demonstrate the highest potential, achieving power conversion efficiencies of 20.74% and 20.73%, respectively.
@article{arxiv.2407.09620,
title = {Numerical Investigation of Optimal Buffer Layer and Performance Evaluation on CdTe Solar Cell},
author = {Tanzir Ahamed and Arifa Rahman and Imteaz Rahaman and Ashraful Mamun and Istiaq Firoz Shiam and Md. Mehedi Hasan Bappy and Tanvir Ahammed and Srabani Karmakar and Hasibul Hasan Parash and Sampad Ghosh},
journal= {arXiv preprint arXiv:2407.09620},
year = {2025}
}
Comments
Following feedback and co-author discussions, we identified areas needing improvement and lack confidence in some data. We aim to revise and may re-upload later