Wet chemical etched CdTe thin film solar cells |
| |
| Authors: | Seungju Chun Seunghun Lee Younghun Jung Jong Seong Bae Jihyun Kim Donghwan Kim |
| |
| Institution: | 1. Department of Materials Science and Engineering, Korea University, 5-1 Anam-Dong, Sungbuk-Gu, Seoul 137-713, Republic of Korea;2. Department of Chemical and Biological engineering, Korea University, 5-1 Anam-Dong, Sungbuk-Gu, Seoul 137-713, Republic of Korea;3. Busan Center, Korea Basic Science Institute, Division of High Technology Materials Research, 1275 Jisa-dong, Gangseo-gu, Busan 618-230, Republic of Korea |
| |
| Abstract: | Wet chemical etching process on as-deposited CdTe surface using nitric-phosphoric (NP) acid improved the efficiency of CdS/CdTe solar cells from 10.1% to 13.8%. Nitric-phosphoric (NP) acid solution etched native oxide (TeO2) layer and resolved excess cadmium on CdTe surface. After the heat treatment process activated the CdCl2, CdO layer which was believed to be a diffusion barrier of chlorine did not grow on the etched CdTe surface and new (VCd2?–2ClTe1+)0 complexes was located at EV + 0.045 eV. New (VCd2?–2ClTe1+)0 complexes acted as a shallow acceptors and induced to improve Voc and Jsc. The surface of CdTe thin film has been studied using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and low temperature Photoluminescence (PL). |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
