Coprecipitation synthesis and properties of color tunable and upconversion luminescence in Tb3+ and Yb3+ co-doped Y(PO3)3 materials
LI Hui-ling1,2, LI Lan-ping1,2, RAO Qi-liang1,2, ZHANG Ling1,2, CHEN Xue-yu1,2, GU Man-qi1,2, YANG Jin-yu1,2
1. School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550001, China; 2. Key Laboratory for Functional Materials Chemistry of Guizhou Province, Guiyang 550001, China
Abstract：Tb3+ and Yb3+ co-doped Y(PO3)3 upconversion luminescence phosphors were prepared by coprecipitation method. The structure and optical properties of the as-synthesized Y(PO3)3: Tb3+,Yb3+ samples were investigated by XRD, SEM, FI-IR and upconversion luminescence spectrophotometer (UPL), respectively. XRD results show that the as-synthesized samples are Tb3+ and Yb3+ co-doped Y(PO3)3 crystals with monoclinic structure (space group P21/c). UPL results display that the obtained Tb3+ and Yb3+ co-doped Y(PO3)3 samples emit the Tb3+ characteristic upconversion blue-green luminescence under 980 nm excitation. The doping content of Tb3+ ions affects the upconversion luminescence properties of the as-prepared Y(PO3)3: x Tb3+, 20%(mole fraction,the same below) Yb3+ samples. When the doping amount of Tb3+ is 2%-10%, the 5D4→7F6 emission peak of the Y(PO3)3: x Tb3+, 20% Yb3+ samples splits into two emission peaks centered at 481 nm and 491 nm. The dominant upconversion peak is located at 547 nm for the Y(PO3)3: x Tb3+, 20% Yb3+ samples when the Tb3+ doping content is 10%-20%. The concentration quenching can be observed when the doping amount of Tb3+ is over 20%. The doping ratio of Tb3+ to Yb3+ and the excitation power density also exhibit effect on the upconversion luminescence properties of the prepared samples. The upconversion blue-green emission color of the as prepared Tb3+ and Yb3+ co-doped Y(PO3)3 samples can be tuned by changing the doping amount ratio of Tb3+ to Yb3+.The upconversion luminescence mechanism of Y(PO3)3: Tb3+, Yb3+ samples was also discussed. The 5D3→7FJ (J=6,5,4) and 5D4→7FJ (J=6,5,4,3) upconversion luminescence are attributed to a three- and two-photon absorption mechanisms, respectively.
李慧玲, 李蓝苹, 饶啟亮, 张玲, 陈雪羽, 顾曼琦, 杨锦瑜. 颜色可调Y(PO3)3:Tb3+,Yb3+上转换发光材料的共沉淀制备及性能[J]. 材料工程, 2021, 49(5): 106-113.
LI Hui-ling, LI Lan-ping, RAO Qi-liang, ZHANG Ling, CHEN Xue-yu, GU Man-qi, YANG Jin-yu. Coprecipitation synthesis and properties of color tunable and upconversion luminescence in Tb3+ and Yb3+ co-doped Y(PO3)3 materials. Journal of Materials Engineering, 2021, 49(5): 106-113.
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2021, Vol. 49 
