Luminescent properties of SrAl2O4: Eu,Dy material prepared by the gel method |
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| Affiliation: | 1. School of Mathematics and Physics, Changzhou University, Jiangsu 213164, China;2. School of Electronics and Information, Nantong University, Jiangsu 226019, China;1. Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan;2. Graduate School of Global Environmental Studies, Kyoto University, Kyoto 606-8501, Japan;1. Key Lab for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering of Tianjin University, Tianjin, China;2. Key Laboratory of Inorganic Nonmetallic Materials Hebei Province, Key Laboratory of Environment Functional Materials of Tangshan City, North China University of Science and Technology, Hebei, Tangshan, China |
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| Abstract: | SrAl2O4:Eu,Dy materials were first prepared by the gel method. Compared with samples prepared by solid state reactions, the grain size of the gel method is greatly reduced to nanometer grade. A clear blue shift occurs in the excitation and emission spectra of nano SrAl2O4:Eu,Dy, of which the peak of the excitation and emission spectra are at 323 and 500 nm respectively. The brightness of nano SrAl2O4:Eu,Dy is greatly reduced. The blue shift and the change of luminescent intensity in nano SrAl2O4:Eu,Dy materials can be attributed to the effect of surface energy. |
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