"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Trap depth analysis of thermally deposited CdSe thin films

K. SARMAH1,* , R. SARMA1, H. L. DAS1

Affiliation

  1. Deptt. of Physics, Gauhati University, Guwahati-781014, India

Abstract

Photocurrent decay characteristics were studied in CdSe thin films deposited by technique of thermal evaporation on suitably cleaned glass substrate held at elevated substrate temperatures. Two different decay times were found which correspond to two distinct trap levels. The trap depths were evaluated under different conditions of temperature and intensity. The trap depths were found to increase with ambient temperature and intensity of white light illumination. The estimated trap depths range from 0.4 eV to 0.7 eV.

Keywords

Cadmium selenide thin film, Photocurrent decay, Trap depth.

Citation

K. SARMAH, R. SARMA, H. L. DAS, Trap depth analysis of thermally deposited CdSe thin films, Optoelectronics and Advanced Materials - Rapid Communications, 2, 5, May 2008, pp.262-266 (2008).

Submitted at: March 18, 2008

Accepted at: May 8, 2008