Electrochemical Deposition, Optical Properties, and Photoelectrochemical Behavior of CdTe Films

Publisher Website
Google Scholar
Abstract
Electrochemical deposition of cadmium telluride from acidic solutions containing and is studied and the current‐potential expression for this reaction is presented. The electrochemically deposited films are photoactive, and the maximum cathodic photocurrent due to hydrogen evolution is observed at films deposited at −0.40V. The photocurrents of the as‐grown films are relatively small compared with those of single crystals. The major reason for this low efficiency is the effective recombination of hole‐electron pairs at grain boundaries and at the surface. The photocurrents are increased significantly by the increase of crystallite diameter by the heat‐treatment in a He atmosphere and by the removal of surface Te, which acts as a recombination center, by the etching treatment.

This publication has 0 references indexed in Scilit: