Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 571, Issue -, Pages 114-117Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.03.198
Keywords
ZnO; Core-Shell nanostructure; p-Type; Atomic layer deposition (ALD)
Categories
Funding
- National Natural Science Foundation of China [61006065, 61076039, 61204065, 61205193, 10804071]
- National Key Lab of High Power Semiconductor Lasers Foundation [9140C310101120C031115]
- Research Fund for the Doctoral Program of Higher Education of China [21022216110002, 20102216110001, 20112216120005]
- Natural Science Foundation of Jilin Province [20101546]
- Developing Project of Science and Technology of Jilin Province [20090139, 20090555, 20121816, 201201116]
- Foundation of Department of Education of Jilin Province [2011JYT05, 2011JYT10, 2011JYT11]
- Changchun International Science and Technology Cooperation Project [2010CC02]
- Research Start Fund of Jilin Agriculture University [201238]
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In this paper, ZnO nanorods were grown on Si substrate with hydrothermal method, followed by Al2O3 and ZnO thin layers deposited on ZnO nanorods by atomic layer deposition, a coated nanocomposite structure ZnO/Al2O3/ZnO nanorods were obtained. Based on Kirkendall effect, ZnO/ZnAl2O4 core-shell nanostructure were fabricated by annealing treatment through an interfacial solid-state reaction between ZnO and Al2O3, which were confirmed by X-ray diffraction spectra. In this process, due to that Zn ions diffused into Al2O3 and formed ZnAl2O4, Zn vacancies were introduced in ZnO. In PL spectra, the emission related to acceptor located at 3.355 eV and 3.315 eV can be observed, which were attributed to A(0)X and FA emission, respectively. The calculated acceptor binding energy is 118 meV. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
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