Effect of annealing temperature and CdCl$_2$ treatment on the photo-conversion efficiency of CdTe/Zn$_{0.1}$Cd$_{0.9}$S thin film solar cells

Bulletin of Materials Science

SONAL SINGHAL^1¹  AMIT KUMAR CHAWLA^2²  RAMESH CHANDRA^4³  HARI OM GUPTA^3⁴ 

[1] Department of Electrical Engineering, Shiv Nadar University, Gautam Buddha Nagar, Noida 201308, India^1;Department of Physics, School of Engineering, University of Petroleum & Energy Studies, Dehradun 248007, India^2;Institute Instrumentation Center, IIT Roorkee, Roorkee 247667, India^4;Jaypee Institute of Information Technology, Gautam Buddha Nagar, Noida 201304, India^3

关键词: CdCl$_2$ treatment;    thin film solar cells;    photo-conversion efficiency.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

We report the effects of annealing in conjunction with CdCl$_2$ treatment on the photovoltaic properties of CdTe/Zn$_{0.1}$Cd$_{0.9}$S thin film solar cells. CdTe layer is subjected to dry CdCl$_2$ treatment by thermal evaporation method and subsequently, heat treated in air using a tube furnace from 400 to 500$^{\circ}$C. AFM and XRD results show improved grain size and crystallographic properties of the CdTe film with dry CdCl$_2$ treatment. This recrystallization and grain growth of the CdTe layer upon CdCl$_2$ treatment translates into improved photo-conversion efficiencies of CdTe/Zn$_{0.1}$Cd$_{0.9}$S cell. The results of dry CdCl$_2$ treatment were compared with conventional wet CdCl$_2$ treatment. Photo-conversion efficiency of 5.2% is achieved for dry CdCl$_2$-treated cells in comparison with 2.4% of wet-treated cell at heat treatment temperature of 425$^{\circ}$C.

【 授权许可】

CC BY