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Effect of pre-heating temperature on structural and optical properties of sol-gel derived Zn0.8Cd0.2O thin films

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Abstract

Zn0.8Cd0.2O thin films prepared using the spin-coating method were investigated. X-ray diffraction, scanning electron microscopy, and UV-Vis spectrophotometry were employed to illustrate the effects of the pre-heating temperature on the crystalline structure, surface morphology and transmission spectra of Zn0.8Cd0.2O thin films. When the thin films were pre-heated at 150 °C, polycrystalline ZnO thin films were obtained. When the thin films were pre-heated at temperatures of 200 °C or higher, preferential growth of ZnO nanocrystals along the c-axis was observed. Transmission spectra showed that thin films with high transmission in the visible light range were prepared and effective bandgap energies of these thin films decreased from 3.19 eV to 3.08 eV when the pre-heating temperature increased from 150 °C to 300 °C.

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Authors and Affiliations

  1. State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology, Wuhan, 430070, China

    Bo Huang  (黄波), Chao Liu  (刘超) & Xiujian Zhao  (赵修建)

Authors
  1. Bo Huang  (黄波)
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  2. Chao Liu  (刘超)
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  3. Xiujian Zhao  (赵修建)
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Corresponding authors

Correspondence to Chao Liu  (刘超) or Xiujian Zhao  (赵修建).

Additional information

Funded by the National Natural Science Foundation of China (No.51461135004), the Doctoral Fund of Ministry of Education Priority Development Project (No.20130143130002), the Key Technology Innovation Project of Hubei Province (2013AAA005), and the Scientific Leadership training Program of Hubei Province

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Huang, B., Liu, C. & Zhao, X. Effect of pre-heating temperature on structural and optical properties of sol-gel derived Zn0.8Cd0.2O thin films. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 31, 1206–1210 (2016). https://doi.org/10.1007/s11595-016-1513-6

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  • DOI: https://doi.org/10.1007/s11595-016-1513-6

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