Raman and photoluminescence studies on nanocrystalline ZnO grown on GaInPAs substrates

	Raman and photoluminescence studies on nanocrystalline ZnO grown on GaInPAs substrates
其他题名	论文其他题名
	Chen S. J.; Liu Y. C.; Jiang H.; Lu Y. M.; Zhang J. Y.; Shen D. Z.; Fan X. W.
	2005
发表期刊	Journal of Crystal Growth
ISSN	0022-0248
卷号	285 期号:1—2 页码:24-30
摘要	Comprehensive Raman and photoluminescence (PL) results on ZnO nanocrystals are presented in this work. The ZnO nanocrystals were prepared by plasma-assisted electron beam evaporation of metallic Zn films on GaInPAs films, which were previously grown on InP substrates by MOCVD, then a low-temperature annealing process was conducted on the as-deposited Zn films. Raman results show the presence of a surface phonon (SP) mode, which reveals that nanocrystals are embedded in a compound matrix. Seven longitudinal optical-phonons (LOs) accompanied by SPs are observed in the resonant Raman spectrum for our ZnO nanocrystals at 80 K, which is probable due to a strong surface enhanced Raman scattering (SERS) effect and quantum confinement effect. Room temperature PL spectra show a single broad UV peak at around 3.45 eV with sharp Raman lines superimposed upon it, indicating a large quantum confinement effect in the ZnO nanocrystals due to their small dimensions. PL spectra measured at different temperatures show an anomalous dependence of the PL intensity with variation in temperature, which is analyzed on the basis of John-Singh's model. The total PL intensity is governed by the combination of radiative and non-radiative processes. (c) 2005 Published by Elsevier B.V.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26808
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Chen S. J.,Liu Y. C.,Jiang H.,et al. Raman and photoluminescence studies on nanocrystalline ZnO grown on GaInPAs substrates[J]. Journal of Crystal Growth,2005,285(1—2):24-30.
APA	Chen S. J..,Liu Y. C..,Jiang H..,Lu Y. M..,Zhang J. Y..,...&Fan X. W..(2005).Raman and photoluminescence studies on nanocrystalline ZnO grown on GaInPAs substrates.Journal of Crystal Growth,285(1—2),24-30.
MLA	Chen S. J.,et al."Raman and photoluminescence studies on nanocrystalline ZnO grown on GaInPAs substrates".Journal of Crystal Growth 285.1—2(2005):24-30.

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