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Band gap narrowing of cadmium oxide powder by rare earth praseodymium doping

Published online by Cambridge University Press:  05 March 2013

H.-Y. He  and
J. Lu
H.-Y. He*
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
J. Lu
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi'an 710021, China
*
Address all correspondence to H.-Y. He athehy@sust.edu.cn
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Abstract

Rare earth Pr-doped cadmium oxide (CdO) powders with various Pr 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 Pr doping led to a decrease of average particle size and change of optical property. The CdO powder with Pr content 0.5 at.% show a maximum Eg decrease of about 3.6% and an absorbance increase of about 8.26%. This variation is explained by the available band gap narrowing models and variations in lattice parameter and density with Pr content.

Type
Research Letters
Information
MRS Communications , Volume 3 , Issue 1 , March 2013 , pp. 47 - 50
Copyright
Copyright © Materials Research Society 2013

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