Blue-Light Emission from Nanocrystalline La_(0.5)Na_(0.5)TiO^(3)

张伟风; 张兴堂; 尹真; 张明生; 马国宏; 杜祖亮

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Blue-Light Emission from Nanocrystalline La_(0.5)Na_(0.5)TiO^(3)

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Nanocrystalline La_(0.5)Na_(0.5)TiO^(3) 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_(0.5)Na_(0.5)TiO^(3) 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.

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《中国物理快报：英文版》 |1998年第10期|P.758-760|共3页
作者
张伟风; 张兴堂; 尹真; 张明生; 马国宏; 杜祖亮;
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作者单位

Center for Materials Analysis and National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093;

Department of Physics He’nan University Kaifeng 475001;

Center for Materials Analysis and National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093;

Center for Materials Analysis and National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093;

Department of Physics He’nan University Kaifeng 475001;

Department of Physics He’nan University Kaifeng 475001;

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正文语种 chi
中图分类无机化学;
关键词
temperature.; sizes; sized;

Blue-Light Emission from Nanocrystalline La_(0.5)Na_(0.5)TiO^(3)

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