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Structural and optical properties of CdTe solar cell films at different substrate temperatures

XIN JI1,* , JUN CHEN DENG2, JIANYONG TENG1,* , ZHI YAN3, YIMING MI1, CHAO MIN ZHANG1

Affiliation

  1. College of Fundamental Studies, Shanghai University of Engineering Science, Shanghai 201620, China
  2. College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China
  3. College of Material Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Abstract

Solar cell absorption layer based on CdTe films were successfully deposited at various substrate heating processes (25, 200 and 400 ℃) by magnetron RF-sputtering. The film structures, morphologies, and optical properties had been characterized by X-ray diffraction (XRD), atomic force microscopy (AFM) and US spectrophotometer. The XRD study revealed that CdTe film at 200 ℃ exhibited cubic and hexagonal structures while single cubic structure appeared at room temperature and 400 ℃. Moreover, the AFM result showed that the structure shapes and grain sizes were slightly different in the films at various substrate temperatures. Finally, the optical measurements suggested that the CdTe film at 200 ℃ showed better optical behavior than other films..

Keywords

Thin film, CdTe, Substrate heating processes, Vapor deposition, Optical properties.

Citation

XIN JI, JUN CHEN DENG, JIANYONG TENG, ZHI YAN, YIMING MI, CHAO MIN ZHANG, Structural and optical properties of CdTe solar cell films at different substrate temperatures, Optoelectronics and Advanced Materials - Rapid Communications, 7, 7-8, July-August 2013, pp.521-524 (2013).

Submitted at: April 18, 2013

Accepted at: July 11, 2013