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]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean Engn & Energy, Zhanjiang 524088, Peoples R China

年份：2025

卷号：280

外文期刊名：JOURNAL OF LUMINESCENCE

收录：SCI-EXPANDED(收录号：WOS:001423586500001)、、WOS

基金：This article is part of a special issue entitled: Scintillators & Dosimeters published in Journal of Luminescence.star Foundation item: Project supported by the Zhanjiang Science and Technology Plan Project (2022A05022) ; Science and Technology Development Special Project of Zhanjiang (2023A21616) ; Research Project of Guangdong Ocean University (060302112102) .

语种：英文

外文关键词：Y2MgTiO6; Thermoluminescence; Tm-Tstop method; Computerized glow curve deconvolution; Dose response

外文摘要：Currently, the double perovskite A(2)BB'O-6 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:0.05Tm(3+),0.2Dy(3+) sample had the strongest TL response, with four TL glow peaks at 363 K, 413 K, 463 K and 551 K. Both T-m-T-stop 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 similar to 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.