Effect of annealing on structural and optical properties of lead tungstate microcrystals

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	Effect of annealing on structural and optical properties of lead tungstate microcrystals
	H. F. Pang ; Z. J. Li ; X. Xiang ; C. L. Zhang ; Y. Q. Fu ; X. T. Zu
刊名	Chinese Physics B
	2011
卷号	20 期号:11
关键词	PbWO(4) microcrystal annealing defects photoluminescence pbwo4 single-crystals luminescence absorption centers
ISSN号	1674-1056
中文摘要	Shuttle-like lead tungstate (PbWO(4)) microcrystals are synthesized at room temperature using the precipitation method with the cetyltrimethyl ammonium bromide. Results from both the X-ray diffraction and the scanning electron microscopy show that the lattice distortions of the PbWO4 microcrystals are reduced significantly when the annealing temperature is increased to 873 K. The result from the ultraviolet-visible diffuse reflectance spectroscopy shows that the exciton absorption appears in the sample annealed at 673 K. The self-trapped exciton luminescence due to the Jahn-Teller effect is also observed in the blue band. The interstitial oxygen ions in the WO(4)(2-) groups are mainly resposible for the enhancement effect of the green luminescence of the annealed samples. The above results are supported by the spectrum analysis of the as-grown and the post-annealed samples using the X-ray photoelectron spectroscopy.
原文出处	://WOS:000298491700061
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30613]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. F. Pang,Z. J. Li,X. Xiang,et al. Effect of annealing on structural and optical properties of lead tungstate microcrystals[J]. Chinese Physics B,2011,20(11).
APA	H. F. Pang,Z. J. Li,X. Xiang,C. L. Zhang,Y. Q. Fu,&X. T. Zu.(2011).Effect of annealing on structural and optical properties of lead tungstate microcrystals.Chinese Physics B,20(11).
MLA	H. F. Pang,et al."Effect of annealing on structural and optical properties of lead tungstate microcrystals".Chinese Physics B 20.11(2011).