標題: Synthesis and physical characteristics of AlOx-coated ZnO nanorod arrays grown in aqueous solution at low temperatures
作者: Hsiao, Chi-Sheng
Chen, San-Yuan
Cheng, Syh-Yuh
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: blue luminescence
公開日期: 1-Feb-2008
摘要: AlOx-ZnO core-shell nanorods arrays have been successfully synthesized by soaking the ZnO nanorods in the sol-gel solution of Al(NO3)(3) and NH4OH at room temperature. It was found that both crystal growth and morphology of the AlOx-ZnO core-shell nanorods are strongly influenced by the solution pH value. SEM image shows that the AlOx-ZnO core-shell nanorods can be perpendicularly grown on the ZnOf/Si substrate under the solution only with a pH value of 6-7. High-resolution TEM observation demonstrates that the structure of the AlOx layer is amorphous and the ZnO nanorod core remains single crystal. After annealed at 400 degrees C in N-2 atmosphere, a strong photoluminescence peak corresponding to blue emission (similar to 450 nm) was detected from the AlOx-ZnO core-shell nanorods that may result from the induced defects due to interaction between AlOx shell and ZnO nanorods. (C) 2007 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jpcs.2007.07.088
http://hdl.handle.net/11536/30253
ISSN: 0022-3697
DOI: 10.1016/j.jpcs.2007.07.088
期刊: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume: 69
Issue: 2-3
起始頁: 625
結束頁: 628
Appears in Collections:Conferences Paper


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