標題: Effects of interface bonding configuration on photoluminescence of ZnO quantum dots-SiOxNy nanocomposite films
作者: Peng, Yu-Yun
Hsieh, Tsung-Eong
Hsu, Chia-Hung
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 1-四月-2008
摘要: Nanocomposite films containing ZnO quantum dots (QDs) and SiOxNy matrix were prepared by target-attached radio frequency sputtering. Photoluminescence (PL) dominated by violet and blue emissions was observed from all ZnO QD-SiOxNy nanocomposite films with dot diameters ranging from 2.77 to 6.65 nm. X-ray photoemission spectroscopy (XPS) revealed the formation of nitrogen-correlated bonding configurations in both the SiOxNy matrix and the dot/matrix interfaces. The nitrogen-correlated configuration at the interface produced a substantial polarization effect at dot surface. The suppression of green-yellow emission observed in photoluminescence spectra of all samples was ascribed to the hole-trapping process promoted by the enhancement of the surface polarization.
URI: http://dx.doi.org/10.1557/jmr.2008.0134
http://hdl.handle.net/11536/9538
ISSN: 0884-2914
DOI: 10.1557/jmr.2008.0134
期刊: JOURNAL OF MATERIALS RESEARCH
Volume: 23
Issue: 4
起始頁: 1155
結束頁: 1162
顯示於類別:期刊論文


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  1. 000254684500037.pdf