文章基本信息

标题：Synthesis, characterization and photoluminescence properties of Tm ³⁺-doped Ca ₂YTaO ₆ blue-emitting phosphors
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作者：Jianhua Li ; Jinyu Huang ; Jing Liao 等
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2021
卷号：267
页码：1-5
DOI：10.1051/e3sconf/202126702018
语种：English
出版社：EDP Sciences
摘要：A series of Ca2YTaO6: Tm3+blue-emitting phosphors were firstly prepared by the solid-state method. The phase formations and purity of Ca2YTaO6:xTm3+(x= 0.3%-5% mol) were verified by X-ray powder diffraction. The morphological characteristics of Ca2YTaO6: 0.005Tm3+were detected by scanning electron microscopy (SEM). Photoluminescence properties were discussed by emission (λem = 460 nm) and excitation (λex = 359 nm) spectra. The critical doping concentration of the products was 0.005 mol. The proposed concentration quenching mechanism in Ca2YTaO6materials was the electric multipole interaction. Besides, the color coordinates (0.1408, 0.0891) of Ca2YTaO6: 0.005Tm3+were located in blue region. The results suggested the Ca2YTaO6: Tm3+phosphors can be promising blue-emitting components for the WLED applications.