Elsevier

Journal of Non-Crystalline Solids

Volumes 35–36, Part 2, January–February 1980, Pages 1079-1083
Journal of Non-Crystalline Solids

Light-induced changes in electrical properties of As3Se2 thin films

https://doi.org/10.1016/0022-3093(80)90343-9Get rights and content

Abstract

We performed measurements of the photoconductivity (PC) and thermally stimulated depolarization currents (TSDC) before and after photodarkening (PD). Spectral onset of PC is shifted to lower energies after PD. TSDC display a low-temperature peak (0.23eV) independent on PD and a high-temperature peak (0.39eV) before PD and (0.54eV) after PD. The activation energy of the dark conductivity is unchanged by PD. The results could be explained by the presence of states with negative correlation energy of about 1.leV.

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Cited by (1)

  • TSDC spectroscopy of relaxational and interfacial phenomena

    2007, Advances in Colloid and Interface Science
    Citation Excerpt :

    However, there are general regularities in the obtained results, especially in the case of hydrated systems. A variety of natural minerals, such as amethyst [94], sapphire [95], stilbite [96], calcite, dolomite, quartz [97], clays [98], mordenites [99,100], cretaceous strata [101], and synthetic solids, such as ceramics doped with CuO, FeO and TiO2[102], silicas, silicates and other compounds with silica [103–106], different crystals [107–112] and polycrystalline structures [113,114], disordered materials [115], thin films [116–121], ferrites [122], metal fluorides [123–129] and solid solutions based on fluorides [130–135], was investigated by the TSDC method. According to Goel [136], the problems related to different electrets can be effectively studied by using the TSDC technique (Table 2); and advances in electret technology offer promise to serve mankind through medical prosthesis and by performing other biological functions.

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