E3S Web Conf.
Volume 213, 20202nd International Conference on Applied Chemistry and Industrial Catalysis (ACIC 2020)
|Number of page(s)||4|
|Section||Industrial Catalysis and Chemical Substance R&D and Application|
|Published online||01 December 2020|
Preparation and spectroscopic properties of Ca2MgTeO6:Tm3+ blue-emitting tellurate phosphors
College of Chemistry&Biology and Environmental Engineering, Xiangnan University, Chenzhou 423043, Hunan, P. R. China
2 Hunan Provincial Key Laboratory of Xiangnan Rare-Precious Metals Compounds Research and Application, Chenzhou 423043, Hunan, P. R. China
* Corresponding author: email@example.com(Bin Deng)
Various novel Ca2MgTeO6:Tm3+ blue-emitting tellurate materials were synthesized via solid-state reaction. The structure and phase purity of prepared Ca2MgTeO6:xTm3+ (x = 0.0025-0.10 mol) were examined by X-ray powder diffraction. The Ca2MgTeO6:Tm3+ phosphors emit blue emission at 359 nm excitation. The optimum doping concentration was 0.02 mol. The concentration quenching mechanism in the Ca2MgTeO6 host was due to the electric dipole-dipole interaction. The The CIE chromaticity coordinates of Ca2MgTeO6:Tm3+ phosphors located in the blue region. These results validated the Ca2MgTeO6:Tm3+ tellurate phosphor can be used as good blue-emitting candidate for W-LEDs.
© The Authors, published by EDP Sciences, 2020
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