• Electrical and photo-electrical properties of a chalcopyrite semiconductor AgInSe2

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Electrical property; photoelectrical property; chalcopyrite semiconductors; transient photoconductivity; steady state photoconductivity

    • Abstract


      In this paper we report the electrical and photoelectrical properties of AgInSe2. Nyquist plots for AgInSe2, obtained at different temperatures, are perfect arcs of a semicircle with their centres lying below the abscissa at an angleα. Finite values ofα (the distribution parameter) clearly indicate a multirelaxation behaviour. Transient and steady state photoconductivity of AgInSe2 has been studied at different temperatures and illumination levels. The lnIph vs lnF curves at different temperatures follow the empirical relation:IphFγ. Values of γ are close to 0.5 at all the temperatures, suggesting a bimolecular recombination. Decay of the photocurrent, when the illumination is switched off, shows that during decay, photocurrent has two components, i.e. a fast decay in the beginning and a slow decay thereafter. Decay time constant for slow decay process decreases with increasing temperature, suggesting that recombination is a thermally activated process in the temperature range studied.

    • Author Affiliations


      Navdeep Goyal1

      1. Department of Physics, Centre of Advanced Study in Physics, Panjab University, Chandigarh - 160 014, India
    • Dates

  • Pramana – Journal of Physics | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.