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White-light Emitting ZnO-SiO2 Nanocomposite Thin Films Prepared by Sputtering Method

Published online by Cambridge University Press:  01 February 2011

Yu-Yun Peng ,
Tsung-Eong Hsieh  and
Chia-Hung Hsu
Yu-Yun Peng
Affiliation:
pyy.mse90g@nctu.edu.tw, National Chiao-Tung University, Department of Materials Science and Engineering, Hsinchu, Taiwan, ., 300, China, People's Republic of
Tsung-Eong Hsieh
Affiliation:
tehsieh@cc.nctu.edu.tw, National Chiao-Tung University, Materials Science and Engineering, Taiwan
Chia-Hung Hsu
Affiliation:
chsu@nsrrc.org.tw, National Synchrotron Radiation Research Center, Research Division, Taiwan
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Abstract

ZnO-SiO2 nanocomposite thin films were prepared using RF sputtering method without substrate heating. The photoluminance (PL) measurements showed that the ZnO-SiO2 nanocomposite thin films are able to emit white light consisting of violet, blue, and green-yellow band emissions. The blue emission was attributed to the large amount of ZnO/SiO2 interfaces, which enlarges the depletion layer width and then enhances the related transition. Further analyses indicated that the defect structure of samples could be manipulated by the amount and distribution of ZnO nanoparticles in SiO2 matrix to yield distinct luminescence property.

Keywords

luminescencesputteringcomposite
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 891: Symposium EE – Progress in Semiconductor Materials V – Novel Materials and Electronics and Optoelectronic Applications , 2005 , 0891-EE10-37
Copyright
Copyright © Materials Research Society 2006

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References

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