Acta Optica Sinica, Volume. 19, Issue 9, 1218(1999)
The Properties of CdS and CdSe Double Layered Films Doping with Copper and Chlorine
The effect of doping with copper and chlorine on various properties of vacuum-evaporated CdS and CdSe doube layers has been studied. The properties specifically studied including: (1) the dark conductivity and photo-conductivity as functions of the doping concentration and the radio of copper to chlorine, (2) the response time of various photo-conductive films and (3) the spectral response. It was found that the dark conductivity decreases and the photo-conductivity 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.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. The Properties of CdS and CdSe Double Layered Films Doping with Copper and Chlorine[J]. Acta Optica Sinica, 1999, 19(9): 1218