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Cl Doping Effect by Thermal Treatment with KCl for ZnO Single Crystals

Published online by Cambridge University Press:  12 April 2011

Akira Fujimoto  and
Yoshiyuki Harada
Akira Fujimoto
Affiliation:
Nanomaterials Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
Yoshiyuki Harada
Affiliation:
Nanomaterials Microdevices Research Center, Osaka Institute of Technology, 5-16-1 Ohmiya, Asahi-ku, Osaka 535-8585, Japan
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Abstract

We investigated the optical and electrical properties of ZnO single crystals coated with KCl by examining the photoluminescence (PL) at 9 K and the temperature dependence of the carrier concentration. The band-edge PL intensity of the KCl-coated sample was much larger than that of the uncoated sample. Moreover, a substantial increase in Hall electrons was observed in the coated sample. X-ray photoelectron spectroscopy revealed bonding between chlorine and zinc atoms in the coated sample. Therefore, coating the surface of ZnO single crystals with KCl enhances the donor concentration and improves the surface state.

Keywords

Hall effectoptical propertiesII-VI
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1288: Symposium G – Novel Fabrication Methods for Electronic Devices , 2011 , mrsf10-1288-g06-20
Copyright
Copyright © Materials Research Society 2011

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