Journal of Synthetic Crystals, Volume. 50, Issue 11, 2081(2021)
Synthesis, Structure and Photoluminescent Properties of Ca1.8Li0.6La0.6-x(PO4)2∶xEu3+ Phosphor with Whitlockite Structure
Whitlockite is an excellent luminescent material. It has lower synthesis temperature and an abundance of adjustable crystal lattice.Ca1.8Li0.6La0.6-x(PO4)2∶xEu3+ (x=0, 0.01, 0.03, 0.06, 0.09, 0.15) was synthesized by high temperature solid state reaction at 1 250 ℃, and its structure and luminescent properties were characterized by X-ray powder diffraction (XRD) and fluorescence spectrometer. The results show that the phosphors belongs to whitlockite structure, and the doping of Eu3+ does not change the structure to a great extent. The phosphor in the system emits red light, and the characteristic emission of Eu3+ appears in the emission spectrum. The strongest emission peak locates at 617 nm and comes from 5D0→7F2 transition of Eu3+. As the concentration of Eu3+ increases, the fluorescence lifetime decreases, which proves the existence of energy transfer between Eu3+.
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TANG Wanjuan, GUO Qingfeng, SU Ke, MEI Lefu, LIAO Libing. Synthesis, Structure and Photoluminescent Properties of Ca1.8Li0.6La0.6-x(PO4)2∶xEu3+ Phosphor with Whitlockite Structure[J]. Journal of Synthetic Crystals, 2021, 50(11): 2081
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Received: Jul. 23, 2021
Accepted: --
Published Online: Feb. 14, 2022
The Author Email: Wanjuan TANG (695683025@qq.com)
CSTR:32186.14.