The evaluation of electron trapping parameters from conductivity glow curves in cadmium sulphide

Abstract

An extensive experimental examination of conductivity glow curves and their analysis has been made on a variety of CdS crystals. A large number of analytical methods have been used to evaluate trap depths and capture cross sections. It is shown that it is possible to obtain consistent results and determine whether retrapping occurs provided an experimental procedure is adopted to produce isolated, non-overlapping, glow curves. Good agreement has been obtained between trap parameters calculated from (1) glow data and (2) photoconductive decay.