Study on energy transfer and temperature sensing properties of Pb2+/Sm3+ co-doped Ba2MgY2(BO3)4

Researches on fluorescence intensity ratio (FIR) based temperature sensors have become more and more popular in recent years. Herein, we co-doped Pb 2+ and Sm 3+ into the host material Ba 2 MgY 2 (BO 3 ) 4 (BMYB) to prepare a new series of phosphors. The Pb 2+ activated phosphor BMYB:0.03 Pb 2+ presents a wide blue emission band centered at 416 nm under 278 nm laser excitation with internal quantum efficiency of 46%. In the presence of both Pb 2+ and Sm 3+ , energy transfer will occur between them, resulting in tunable color emission. Besides, the phosphor has an absolute sensitivity of 0.96% K −1 at 575 K, which makes it an excellent candidate for temperature sensing. These findings suggest that prepared phosphor is a potential candidate for color tunable phosphor and temperature sensing material.