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Influence of substrate temperatures on morphologies and optical properties of CdTe solar cell films

XIN JI1,* , LIN JUN WANG1, JIAN YONG TENG1, YI MING MI2, CHAO MIN ZHANG2

Affiliation

  1. School of Materials Science & Engineering, Shanghai University, Shanghai 200444, China
  2. College of Fundamental Studies, Shanghai University of Engineering Science, Shanghai 201620, China

Abstract

Solar cell absorbing layer based on CdTe films were successfully deposited by magnetron RF-sputtering with different substrate temperatures (25, 200 and 400 ℃). The effect of substrate heating processes on the film surface morphologies, section morphologies and optical properties was investigated in detail. The surface morphologies results show that the increase of substrate temperature is in favor to change the grain size and structure shape. The section morphologies results implied the density of grains was increased with increasing grain sizes when substrate temperature increased from 25 to 200 ℃. Furthermore, it is indicated that 200℃ is the best substrate heating process in the optical properties in the all samples..

Keywords

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

Citation

XIN JI, LIN JUN WANG, JIAN YONG TENG, YI MING MI, CHAO MIN ZHANG, Influence of substrate temperatures on morphologies and optical properties of CdTe solar cell films, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1135-1138 (2015).

Submitted at: July 29, 2015

Accepted at: Sept. 9, 2015