Abstract
The electrical and photoconducting properties of cadmium sulphide films were investigated. The films were prepared by a chemical spray deposition process and had different cadmium to sulphur ion ratios. The photoconducting spectral response of these films shows a dip in the region of 490 nm, which is in close agreement with the band gap determined from optical absorption measurements. The 1C3T sample (having one part CdCl 2·5H 2O and three parts thiourea) was found to give maximum photosensitivity, with a ratio of light to dark current at 3200 lx of 10 5−10 6. Values of the activation energy calculated from plots of the logarithm of the dark resistance as a function of temperature were 0.03 eV and 0.65–0.95 eV for various samples; these values are attributed to donor chloride ions and to complexes of associated cadmium and sulphur vacancies in nearest neighbour sites.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
