عنوان
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Optical and electrical properties of copper-incorporated ZnS films applicable as solar cell absorbers
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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ZnS; Cu2C doped ZnS; UV–visible absorption; photoluminescence
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چکیده
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Un-doped and Cu-doped ZnS (ZnS:Cu) thin films were synthesized by Successive Ion Layer Absorption and Reaction (SILAR) method. The UV–visible absorption studies have been used to calculate the band gap values of the fabricated ZnS:Cu thin films. It was observed that by increasing the concentration of Cu2C ions, the Fermi level moves toward the edge of the valence band of ZnS. Photoluminescence spectra of un-doped and Cu-doped ZnS thin films was recorded under 355 nm. The emission spectrum of samples has a blue emission band at 436 nm. The peak positions of the luminescence showed a red shift as the Cu2C ion concentration was increased, which indicates that the acceptor level (of Cu2C) is getting close to the valence band of ZnS.
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پژوهشگران
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قاسم کاوه ای (نفر چهارم)، حسین شکروش آلقو (نفر سوم)، ذبیح اله استکی استکی (نفر دوم)، مسعود مهرابیان (نفر اول)
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