Properties of vacuum-evaporated CdS and CdSe double-layer-films doping with copper and chlorine

Peifu Gu; Haifeng Li; Zhenchai Zhu; Jinfa Tang

doi:10.1117/12.161966

22 October 1993 Properties of vacuum-evaporated CdS and CdSe double-layer-films doping with copper and chlorine

Peifu Gu, Haifeng Li, Zhenchai Zhu, Jinfa Tang

Proceedings Volume 2017, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII; (1993) https://doi.org/10.1117/12.161966
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The effect of doping with copper and chlorine on various properties of vacuum-evaporated CdS and CdSe double layers has been studied. The properties specifically studied were: (1) the dark conductivity and photoconductivity as functions of the doping concentration and the ratio of copper to chlorine, (2) the response time of various photoconductive films and (3) the optical absorption and spectral response. It was found that the dark conductivity decreases and the photoconductivity increases significantly if the ratio of Cu to Cl is suitable. The response time was about 5 - 10 ms for doping films and more than 100 ms for undoping ones. The optical absorption increases and the spectral response moves to a longer wavelength as the concentration of CdSe increases. The response wavelength can be changed by adjusting the thickness ratio of CdS to CdSe.

Citation Download Citation

Peifu Gu, Haifeng Li, Zhenchai Zhu, and Jinfa Tang "Properties of vacuum-evaporated CdS and CdSe double-layer-films doping with copper and chlorine", Proc. SPIE 2017, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XII, (22 October 1993); https://doi.org/10.1117/12.161966

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