Solution combustion synthesis, structure and luminescence of Y3Al5O12 : Tb3+ phosphors
Data(s) |
2006
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Resumo |
The synthesis and optical properties of Y3Al5O12:Tb3+ phosphors are reported in this paper. Y3Al5O12:Tb3+ phosphors were synthesized by a facile solution combustion method. Citric acid traps the constituent cations and also acts as a fuel. Y3Al5O12 (YAG) phase can crystallize through sintering at 900 degrees C for 2 h, and there were no intermediate phases such as YAlO3 (YAP) and Y4Al2O9 (YAM) in the sintering process. The excitation spectra of crystalline Y3Al5O12:Tb3+ are different from that of amorphous one due to the crystal field effect. The emission spectra mainly show D-5(4) -> F-7(6) transition under UV excitation. The higher concentration quenching in Y3Al5O12:Tb3+ nanophosphors may be due to the confinement effect on resonant energy transfer of nanocrystalline. It is also indicated that the solution combustion synthesis method provides a good distribution of Tb3+ activators in Y3Al5O12 host. (c) 2005 Published by Elsevier B.V. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Xia Guodong;周圣明;张军杰i;Wang Sumei;徐军.,J. Alloy. Compd.,2006,421(1-2):294-297 |
Palavras-Chave | #光学材料;晶体 #nanostructures #chemical synthesis #X-ray diffraction #luminescence |
Tipo |
期刊论文 |