Blue-Light Emission from Nanocrystalline La0.5Na0.5TiO3

Chin. Phys. Lett.

1998, Vol. 15

Issue (10): 758-760 DOI:

Original Articles

Blue-Light Emission from Nanocrystalline La_0.5Na_0.5TiO₃

ZHANG Wei-feng¹;ZHANG Xing-tang²;YIN Zhen¹;ZHANG Ming-sheng¹;MA Guo-hong²;DU Zu-liang²

¹Center for Materials Analysis and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 ²Department of Physics, He’nan University, Kaifeng 475001

Cite this article:

ZHANG Wei-feng, ZHANG Xing-tang, YIN Zhen et al 1998 Chin. Phys. Lett. 15 758-760

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Abstract Nanocrystalline La_0.5Na_0.5TiO₃ powders were prepared by the stearic acid-gel method, and the grain sizes could be controlled by varying annealing temperatures. The sizes were determined to be from 14 to 50nm using Scherrer's formula. A very strong blue-light emission band around 480nm was clearly observed in the nano-sized La_0.5Na_0.5TiO₃ with a grain size of 14nm at room temperature. Also, nano-size effects on the luminescence properties were investigated. These results could be explained with the aid of a self-trapped exciton model.

Keywords: 78.55.Hx 77.84.Dy

Published: 01 October 1998

PACS:	78.55.Hx	(Other solid inorganic materials)
	77.84.Dy

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I10/0758

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	ZHANG Wei-feng
	ZHANG Xing-tang
	YIN Zhen
	ZHANG Ming-sheng
	MA Guo-hong
	DU Zu-liang

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