文献类型：期刊文献

英文题名：Photoluminescence and thermoluminescence properties of rare earth Tm3+, Dy3+ co-doped Y2MgTiO6 double perovskite phosphors

作者：Wang, Luyan[1]; Huang, Jinzhe[2]; Chen, Li[1]; Xiong, Zhengye[1]; Guo, Jingyuan[1]

机构：[1] School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, 524088, China; [2] College of Ocean Engineering and Energy, Guangdong Ocean University, Zhanjiang, 524088, China

年份：2025

卷号：280

外文期刊名：Journal of Luminescence

收录：EI(收录号：20250517797849)、Scopus(收录号：2-s2.0-85216536029)

语种：英文

外文关键词：Decay (organic) - Doping (additives) - Dysprosium compounds - Laser beams - Perovskite - Phosphors - Thermoluminescence - Thulium compounds

外文摘要：Currently, the double perovskite A2BB'O6 can be used as an ideal matrix material for the study of rare earth-doped phosphor research because of its flexible chemical composition range and stable crystal structure. In this study, Y2MgTiO6:Tm3+,Dy3+ (YMT:Tm3+,Dy3+) series phosphors were synthesized via the high-temperature solid-state method. SEM illustrated that the sample consisted of irregular micron particles with some agglomeration. XRD confirmed that the prepared Y2MgTiO6 phosphors were in a single pure phase and that Dy3+ and Tm3+ replaced the Y3+ in the crystal lattice. The photoluminescence (PL) spectra revealed three distinct emission peaks (458 nm, 484 nm and 579 nm) of the YMT:Tm3+,Dy3+ phosphors under UV excitation at 353 nm, which confirmed the existence of the energy transfer from Tm3+ to Dy3+. The thermoluminescence (TL) curves revealed that the YMT:0.05Tm3+,0.2Dy3+ sample had the strongest TL response, with four TL glow peaks at 363 K, 413 K, 463 K and 551 K. Both Tm?Tstop method and the computerized glow curve deconvolution (CGCD) method revealed that the TL curve consisted of six overlapping peaks, with trap depths ranging from 0.6 to 1.52 eV. Peak Ⅰ and Peak Ⅳ moved towards high and low temperatures, respectively, with increasing dose; and the main Peak Ⅳ (510～640 K) of the TL curve had been saturated. The dose-response curves of each overlapping peak were further analysed via the CGCD method, and it was found that Peak 1, Peak 3 and Peak 4 tended to saturate and all other peaks increased linearly. And due to the charge hopping between the traps, it resulted that Peak 2 has not reached saturation yet. In addition, the sample has good repeatability and stability. These experimental results indicate that this rare-earth doped double perovskite phosphor has some potential for TL dosimetry applications. ? 2025