• Characteristics of photoconductivity in thallium monosulfide single crystals

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    • Keywords


      Radiation effects; semiconductors; photoconductivity.

    • Abstract


      This work elucidates the photoconductivity (PC) of thallium monosulfide single crystals. Results are obtained in the 77-300 K temperature range, 1500-4500 V lx excitation intensity, 6-18 V applied voltage, and in the 640-1500 nm wavelength range. Both the ac-photoconductivity (ac-PC) and the spectral distribution of the photocurrent are studied in different values of light intensity, applied voltage and temperature. Dependencies of carrier lifetime on light intensity, applied voltage and temperature are also investigated as a result of the ac-PC measurements. The temperature dependence of the energy gap width was described by studying the dc-photoconductivity (dc-PC).

    • Author Affiliations


      I M Ashraf1 H A Elshaikh1 A M Badr1

      1. Physics Department, Faculty of Science (Aswan), South Valley University, Egypt
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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