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Updated: Sep 27, 2025
Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Crystal growth, layered structure and luminescence properties of K2Eu(PO4)(WO4)
Kateryna V Terebilenko1, Vitalii P Chornii1,2, Valeriіa O Zozulia1
1Taras Shevchenko National University of Kyiv Volodymyrska St. 64 Kyiv 01601 Ukraine kterebilenko@gmail.com.
Abstract:
K2Eu(PO4)(WO4) has been prepared via the high-temperature solution growth (HTSG) method using K2WO4-KPO3 molten salts as a self-flux and characterized by single-crystal X-ray diffraction analysis, IR and luminescence spectroscopy. The structure of this new compound features a 2D framework containing [EuPO6]4- layers, which are composed of zigzag chains of [EuO8]n interlinked by slightly distorted PO4 tetrahedra. Isolated WO4 tetrahedra are attached above and below these layers, leaving space for the K+ counter-cations. The photoluminescence (PL) characteristics (spectra, line intensity distribution and decay kinetics) confirm structural data concerning one distinct position for europium ions. The luminescence color coordinates suggest K2Eu(PO4)(WO4) as an efficient red phosphor for lighting applications.
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