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Preparation and characterization of nano sized pure ZnTe and antimony doped ZnTe nano thin films by spray pyrolysis technique

  • N Senthil Kumar Department of Science and Humanities, M .Kumarasamy College of Engineering, Karur- 639 113 Tamil Nadu, India
  • K Mohanraj Raman Research Laboratory, PG & Research Department of Physics, Government Arts College, Tiruvannamalai, Tamil Nadu-606603, India
  • R Thangarasu Department of Physics, PSG College of Arts and Science, Coimbatore – 641 014, Tamil Nadu, India
  • B Mohanbabu Department of Physics, Sri Shakthi Institute of Engineering and Technology, L & T Bypass Road, Coimbatore – 641 062, Tamil Nadu, India
  • B Babu Department of Physics, Sri Ramakrishna Mission Vidyalaya College of Arts and Science, Coimbatore – 641 020, Tamil Nadu, India

Abstract

Antimony doped ZnTe thin films developed by spray pyrolysis technique. The deposited thin films are characterized by X-ra diffraction (XRD), scanning electron microscope (SEM), energy dispersive electron microscopy (EDS) and ulra-violet visible spectroscopy (UV-Vis). XRD studies indicate that antimony doping in host result a crystallinity change. The average particle size calculated from XRD values is in good agreement with the SEM results. EDS spectrum is a good evidence of confirm the formation of antimony doped ZnTe. An optical band gap calculated value varying from 2.3 eV to1.9 eV. The extinction coefficient increases depending on the temperature 300 ̊ C, 350 ̊ C and 400 ̊ C.

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