Improved near-infrared up-conversion emission of YAG:Yb,Tm phosphor substituted by Gallium and Indium
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Gallium–Indium co-substituted yttrium aluminum garnet (YAG:Yb,Tm) phosphors were synthesized by co-precipitation method. It can be seen that gallium and indium ions co-substitution didn’t change the phase of YAG. The upconversion luminescence (UCL) properties of the Gallium–Indium co-substituted (YAG:Yb,Tm) samples were measured under 980 nm excitation. The effects of different In3+concentration on the luminescence properties of Gallium–Indium co-substituted (YAG:Yb,Tm) were also investigated. The fluorescence-lifetime investigation shows that the substitution of Ga3+ and In3+ has a significant influence on energy transfer between Yb3+ and Tm3+ in the YAG samples.
KeywordsGallium In2O3 Yb2O3 Upconversion Luminescence Upconversion Emission
This work was financially supported by the National Natural Science Foundation of China (Grant No. 11304045), Guangdong Excellent Talents Project (Grant No. 400140095), and Guangdong Provincial Science and Technology Project (Grant No. 2013B090700006).