文献类型：期刊文献

英文题名：Luminescence properties and energy-transfer behavior of Y_2-x-yBi_xEu_yMgTiO₆ phosphors

作者：Liu, Hao[1];Guo, Jingyuan[1];Xu, Jinyi[1];Zhang, Zefeng[1];Zeng, Caixing[1];Wang, Luyan[1];Xiong, Zhengye[1]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2023

卷号：9

期号：8

外文期刊名：HELIYON

收录：SCI-EXPANDED(收录号：WOS:001066274300001)、、WOS

基金：The authors declare the following financial interests/personal relationships which may be considered as potential competing in-terests: Zhengye Xiong reports financial support was provided by Zhanjiang Science and Technology Bureau. Jingyuan Guo reports financial support was provided by Guangdong Ocean University.

语种：英文

外文关键词：Y2MgTiO6; Photoluminescence; Tunable emission; Energy transfer; X-ray excitation luminescence

外文摘要：In recent years, double perovskite has become a research hotspot of luminescent matrix materials due to its flexible structure, easy doping and good thermal stability. By using a high temperature solid-state technique, Bi3+ and Eu3+ co-doped Y2-x-yBixEuyMgTiO6 (0 <= x <= 0.1, 0 <= y <= 0.5) phosphors were made. X-ray diffraction (XRD) analysis shows that the crystal structure of all samples is monoclinic system, P2(1)/n; Bi3+ and Eu3+ can be doped into the position of Y3+ in the substitution system of Y2MgTiO6. Both photoluminescence spectroscopy (PL) and X-ray excitation luminescence spectroscopy (XEL) were used to investigate the link between Bi3+ and Eu3+ doping concentrations and luminescence intensity. PL shows that: When 375 nm is used as the excitation wavelength, by varying the doping concentration of Eu3+ in the Y1.995-yBi0.005EuyMgTiO6 phosphor, it is possible to create the color-tunable emission from blue to red; The introduction of an appropriate amount of Bi3+ will increase the typical Eu3+ emission; The way that the system's Bi3+ and Eu3+ exchange energy can be observed by combining the fluorescence decay curve and photoluminescence. Fitting by concentration quenching model shows that the resonant dipoledipole transition is the mechanism of energy transfer between Bi3+.Eu3+; X-rays may successfully stimulate the phosphor, and the spectral distribution of XEL and PL is basically the same; The introduction of an appropriate amount of Bi3+ is also beneficial to improving the sensitivity of XEL; Changes in temperature affect the sample's emission intensity; In addition, the samples remain stable for an extended period while being continuously exposed to X-rays at various environmental temperatures. The a forementioned findings suggest that the phosphor has potential use value in the lighting industry, X-ray imaging and temperature sensor.