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Investigation on the crystal structure, optical and electrical properties of Er3+ implanted CdTe thin film

Hou Juan Zheng Yu-Feng Dong You-Zhong Kuang Dai-Hong Sun Yan-Fei Li Qiang

Investigation on the crystal structure, optical and electrical properties of Er3+ implanted CdTe thin film

Hou Juan, Zheng Yu-Feng, Dong You-Zhong, Kuang Dai-Hong, Sun Yan-Fei, Li Qiang
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  • Received Date:  01 September 2005
  • Accepted Date:  20 July 2006
  • Published Online:  05 June 2006

Investigation on the crystal structure, optical and electrical properties of Er3+ implanted CdTe thin film

  • 1. 新疆大学物理科学与技术学院,乌鲁木齐 830046

Abstract: The structure, optical and electrical properties of the CdTe polycrystalline thin film prepared by close-space sublimation and doped with rare earth element erbium using ion implantation had been investigated by means of X-ray diffraction, scanning electron microscopy, ultraviolet visible spectroscopy, Hall effect and impedance measurement. The results indicate that the crystallinity of the samples can be improved with suitable doping concentration. It is believed that the grain-boundary barrier of the thin film CdTe:Er can be decreased due to the appearance of electron traps at grain boundaries. It is found that the implantation of Er3+ in CdTe thin film causes a great change in conductivity but only a little influence on optical energy band gap of the samples.

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