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Abstract <p>Optical quenching of photocurrent, the dependence of the quenching magnitude on the wavelength of the additional quenching light, and temperature were studied in stoichiometric, nonstoichiometric, and copper-doped CdIn<sub>2</sub>S<sub>4</sub> samples. It was shown that a deficiency of cadmium and indium in CdIn<sub>2</sub>S<sub>4</sub> does not change the energy distance of slow recombination centers from the valence band top (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11451_2025_4503_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\(E_{{{\text{vr}}}}^{{\text{0}}}\)</EquationSource> <!--PhysSoSt2560107Kadiroglu-m1--> </InlineEquation> = 0.73 eV for both undoped samples and those with cadmium and indium deficiency), whereas doping the crystals with copper leads to a slight increase in this energy distance (<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11451_2025_4503_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\(E_{{{\text{vr}}}}^{{\text{0}}}\)</EquationSource> <!--PhysSoSt2560107Kadiroglu-m2--> </InlineEquation> = 0.86 eV).</p>

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The Role of Cation Deficiency and Impurities in the Formation of Photosensitivity Centers in CdIn2S4 Compound

  • 期刊论文

  • 发表日期：

    2025年8月11日

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  • Zafar Kadiroglu

摘要

Abstract

Optical quenching of photocurrent, the dependence of the quenching magnitude on the wavelength of the additional quenching light, and temperature were studied in stoichiometric, nonstoichiometric, and copper-doped CdIn2S4 samples. It was shown that a deficiency of cadmium and indium in CdIn2S4 does not change the energy distance of slow recombination centers from the valence band top ( \(E_{{{\text{vr}}}}^{{\text{0}}}\) = 0.73 eV for both undoped samples and those with cadmium and indium deficiency), whereas doping the crystals with copper leads to a slight increase in this energy distance ( \(E_{{{\text{vr}}}}^{{\text{0}}}\) = 0.86 eV).