Site Occupancy Studies and Luminescence Properties of Emission Tunable Phosphors Ca9La(PO4)7:Re (Re = Ce3+, Eu2+)

被引：48
作者：
Xie, Mubiao [1 ]
Wei, Haifeng [1 ]
Wu, Weijie [1 ]
机构：
[1] Lingnan Normal Univ, Sch Chem & Chem Engn, Zhanjiang 524048, Peoples R China
来源：
INORGANIC CHEMISTRY | 2019年 / 58卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ENERGY-TRANSFER; TRIVALENT LANTHANIDES; PHOTOLUMINESCENCE; EFFICIENT; PROGRESS;
D O I：
10.1021/acs.inorgchem.8b02597
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The structure, site occupancies, and photoluminescence (PL) properties of Ce3+- or Eu2+-doped Ca9La(PO4)(7) phosphors were investigated in this work. The powder X-ray diffraction (XRD) data and Rietveld refinement results showed that the phosphors are pure phases. The vacuum ultraviolet-ultraviolet-visible (VUV-UV-vis) spectra and decay curves confirmed that the Ce3+ and Eu2+ ions in Ca9La(PO4)(7) occupied two crystal sites. Additionally, the tunable color can be obtained by adjusting doping concentration and altering temperature. The fabricated w-LED lamp based on Eu2+-doped Ca9La(PO4)(7) phosphor gave properties with a color rendering index (CRI) of 85.26, CIE chromaticity coordinates of (0.358, 0.307), and color temperature (CCT) of 4329 K.
引用
收藏
页码：1877 / 1885
页数：9
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