Effects of thermal annealing on the structural and optical properties E of MgxZn1-xO nanocrystals

	Effects of thermal annealing on the structural and optical properties E of MgxZn1-xO nanocrystals
其他题名	论文其他题名
	Li J. H.; Liu Y. C.; Shao C. L.; Zhang X. T.; Shen D. Z.; Lu Y. M.; Zhang J. Y.; Fan X. W.
	2005
发表期刊	Journal of Colloid and Interface Science
ISSN	0021-9797
卷号	283 期号:2 页码:513-517
摘要	MgxZn(1-x)O ternary alloy nanocrystals with hexagonal wurtzite structures were fabricated by using the sol-gel method. X-ray diffraction patterns, UV-vis absorption spectra, and photoluminescence spectra were used to characterize the structural and optical properties of the nanocrystals. For as-prepared nanocrystals, the hand gap increases with increasing Mg content. Weak excitonic emission with strong deep-level emission related to oxygen vacancy and interface defects is observed in the photoluminescence, spectra at room temperature. Thermal annealing in oxygen was used to decrease the number of defects and to improve the quality of the nanocrystals. In terms of XRD results, the grain sizes of nanocrystals increase with increasing annealing temperature and the lattice constants of alloy are smaller than those Of pure ZnO. The band gap becomes narrower with increasing annealing temperature. For MgxZn1-xO nanocrystals (x = 0.03-0.15) annealed at temperatures ranging from 500 to 1000 degreesC, intense near-band-edge (NBE) emissions and weak deep-level (DL) emissions are observed. Consequently, the quality of MgxZn1-xO nanocrystals can be improved by thermal annealing. (C) 2004 Elsevier Inc. All rights reserved.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25002
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li J. H.,Liu Y. C.,Shao C. L.,et al. Effects of thermal annealing on the structural and optical properties E of MgxZn1-xO nanocrystals[J]. Journal of Colloid and Interface Science,2005,283(2):513-517.
APA	Li J. H..,Liu Y. C..,Shao C. L..,Zhang X. T..,Shen D. Z..,...&Fan X. W..(2005).Effects of thermal annealing on the structural and optical properties E of MgxZn1-xO nanocrystals.Journal of Colloid and Interface Science,283(2),513-517.
MLA	Li J. H.,et al."Effects of thermal annealing on the structural and optical properties E of MgxZn1-xO nanocrystals".Journal of Colloid and Interface Science 283.2(2005):513-517.

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