Upconversion luminescence of Yb3+/Tb3+/Er3+-doped fluorosilicate glass ceramics containing SrF2 nanocrystals
作者： Xvsheng Qiao , Xianping Fan , Zheng Xue , Xuanhe Xu , Qun Luo
DOI: 10.1016/J.JALLCOM.2011.01.099
关键词:
摘要: Abstract Yb 3+ /Tb /Er -doped transparent alkaline earth fluorosilicate glass ceramics containing SrF 2 nanocrystals were prepared and their microstructures spectroscopic properties investigated. The formation of enriched with in the was confirmed by XRD, HRTEM SAED. exhibited intense upconversion luminescence behaviors, owing to efficient energy transfers from Er Tb low phonon assistant non-radiative transition probabilities excited . could be enhanced significantly increasing annealing temperature color adjusted varying ratio. Upconversion described as sequential transfer single , while cooperative double
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