The effect of annealing temperature on the structural, optical, and electrical properties of CdS films

被引：0
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作者：
Hulya Metin
Ari Mehmet
Selma Erat
Semra Durmus
Mehmet Bozoklu
Artur Braun
机构：
[1] Mersin University,Department of Physics
[2] Erciyes University,Department of Physics
[3] Laboratory for High Performance Ceramics EMPA—Swiss Federal Laboratories for Materials Testing & Research,Department of Materials
[4] Nonmetallic Inorganic Materials ETH Zurich—Swiss Federal Institute of Technology,undefined
来源：
Journal of Materials Research | 2010年 / 25卷
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摘要：
Cadmium sulfide (CdS) photocatalyst films were grown on glass by chemical bath deposition (pH 9.4, 70 °C) and then annealed in nitrogen from 423 K to 823 K in steps of 100 K. The XRD crystallite size increases in a sigmoidal manner from 60 nm to 100 nm while the optical band gap energy decreases from 2.42 eV to 2.28 eV. This trend is paralleled by the decreasing Urbach energy, but only up to 623 K, where it increases again. This is the temperature where the Cd effectively surpasses the phase transformation from cubic to hexagonal, and the activation energy for electronic transport drops by a factor of nearly two.
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页码：189 / 196
页数：7
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