Articles
  • Band gap narrowing of CdO powder by rare earth neodymium doping
  • P. Chen, Z. He and H.-Y. He*
  • Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, 710021 China
Abstract
Rare earth Nd-doped CdO powders with various Nd contents (0-2.0 at.%) were synthesized by a coprecipitation process and characterized by X-ray diffraction, field emission scanning electron microscopy, and UV-vis spectrophotometry. The experimental results indicate that the Nd doping led to a decrease of the average particle size and a change of thenoptical property. The band gap of the CdO powder was suddenly narrowed about 12.45% due to a slight Nd doping of 0.5 at.% and then increased with further increasing Nd content. This variation was explained by the available band gap narrowing models.

Keywords: CdO, Nd-doping, Semiconductor, Band gap, Optical properties.

This Article

  • 2013; 14(1): 56-58

    Published on Feb 28, 2013

Correspondence to

  • E-mail: