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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50725

Title: Characterization of nanostructured spinel zinc aluminate crystals on wurtzite zinc oxide template
Authors: Yuan-Chang Liang
Chia-Yen Hu
Xian-Shi Deng
Hua Zhong
Y.-J.Wu
Contributors: 國立臺灣海洋大學:材料工程研究所
Keywords: A1. Crystallites
A1. Surface structure
A3. Chemical vapor deposition processes
B1. Oxides
Date: 2012-10
Issue Date: 2018-10-22T03:56:29Z
Publisher: J. Crystal Growth
Abstract: Abstract: This study reports the synthesis of ZnAl2O4 (ZAO) nanocrystallites with various degrees of crystal quality using high-temperature annealing of efficiently cross-linked ZnO–Al2O3 core–shell nanowires. The effects of annealing temperature on the formation of ZAO nanocrystallites from ZnO–Al2O3 core–shell nanowires were investigated. X-ray diffraction patterns revealed the cubic spinel phase structure of the ZAO nanocrystallites. Scanning electron microscopy images revealed that the ZnO–Al2O3 core–shell nanowires annealed at a high temperature exhibited a rugged surface, which is associated with the formation of the ZAO phase. Transmittance electron microscopy analysis showed that the crystalline quality of each ZAO nanograin formed at 800 °C was inhomogeneous, and most of the ZAO phase exhibited unsatisfactory crystalline quality; however, those formed at 1000 °C exhibited excellent crystalline quality. The nanowires annealed at 1000 °C exhibited a strong UV band emission (3.25 eV), as well as a marked visible emission band at 2.75 eV.
Relation: 359 pp.25-29
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50725
Appears in Collections:[材料工程研究所] 期刊論文

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