Low-temperature synthesis and characterization of ZnO quantum dots

	Low-temperature synthesis and characterization of ZnO quantum dots
其他题名	论文其他题名
	Yang L. L.; Yang J. H.; Liu X. Y.; Zhang Y. J.; Wang Y. X.; Fan H. G.; Wang D. D.; Lang J. H.
	2008
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	463 期号:1—2 页码:92-95
摘要	ZnO quantum dots (QDs) were fabricated at low temperature of 200 degrees C through thermal decomposition method with slight introduction of dodecyl sulfate (SIDS). The morphology, structure and optical properties were investigated by the methods of X-ray diffraction (XRD), transmission electron microscope (TEM), photoluminescence (PL) and Raman spectrum, respectively. The XRD results showed the as-synthesized ZnO QDs had hexagonal wurtzite structure and the average grain size estimated from Scherrer formula was 7.5 nm which had a good agreement with TEM result. And it is evident that the introduction of SDS can actually decrease the grain size to form ZnO QDs. The Raman results also indicated that the ZnO QDs keep the overall crystal structure of the bulk ZnO. Both spatial confinement within the dot boundaries and phonon localization by defects were the mainly reason for the only few cm(-1) redshift of the Raman scatter peaks. The room-temperature photoluminescence reveals that the as-prepared ZnO QDs exhibit an ultraviolet emission at 380 nm and a broad deep level emission band in the range of 420-700 nm in wavelength, which testified the Raman and XRD results that the as-synthesized ZnO QDs had defects. Moreover, the growth mechanism of ZnO QDs was also discussed in the article. (C) 2007 Elsevier B.V. All fights reserved.
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/181722/26352
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yang L. L.,Yang J. H.,Liu X. Y.,et al. Low-temperature synthesis and characterization of ZnO quantum dots[J]. Journal of Alloys and Compounds,2008,463(1—2):92-95.
APA	Yang L. L..,Yang J. H..,Liu X. Y..,Zhang Y. J..,Wang Y. X..,...&Lang J. H..(2008).Low-temperature synthesis and characterization of ZnO quantum dots.Journal of Alloys and Compounds,463(1—2),92-95.
MLA	Yang L. L.,et al."Low-temperature synthesis and characterization of ZnO quantum dots".Journal of Alloys and Compounds 463.1—2(2008):92-95.

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