Structure-dependent luminescence properties of Eu3+-doped CsBPO4 (B = Mg,Zn) |
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| Institution: | 1. Lobachevsky State University of Nizhni Novgorod, pr. Gagarina 23, Nizhni Novgorod 603950, Russia;2. National University of Science and Technology “MISIS”, Leninskii Prospect 4, Moscow 119049, Russia;3. Kurnakov Institute of General and Inorganic Chemistry of RAS, Leninsky Prospect 31, Moscow 119991, Russia;1. Department of Physics, N.H.College, Bramhapuri, Dist Chandrapur 441206, India;2. N.H.College, Bramhapuri, Dist Chandrapur 441206, India;3. Department of Physics, Sant Gadge Maharaj Mahavidyalaya, Hingna, Dist Nagpur, India;4. Department of Physics, RTM Nagpur University, Nagpur 440033, India;1. Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi, 530004, China;2. School of Materials Science and Engineering, Guangxi University, Nanning, Guangxi, 530004, China;3. Harold Vance Department of Petroleum Engineering, Texas A&M University, 3116 TAMU, College Station, TX 77843-3116, United States;1. School of Material Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China;2. Changchun Normal University, Changchun, 130032, China |
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| Abstract: | Eu3+-doped monophosphate CsBPO4 (B = Mg, Zn) was synthesized by conventional solid state reaction. The crystal phase formations and morphology of the phosphates were analyzed by X-ray powder diffraction (XRD) and scanning electron microscope (SEM) measurements, respectively. The luminescence properties, including the photoluminescence excitation and emission spectra, decay curve (lifetime), the color coordinates and the internal quantum efficiency were investigated. Two Eu3+-doped monophosphates display very distinct luminescence properties. CsMgPO4:Eu3+ presents the dominant reddish-orange emission from magnetic dipole transition 5D0 → 7F1 and a long luminescence lifetime. In contrast, CsZnPO4:Eu3+ has a pure red color with the dominant induced electric-dipole transition 5D0 → 7F2 and a fast decay. Different results on the luminescence features of CsBPO4 (B = Mg, Zn):Eu3+ were discussed on the base of crystal structure. Eu3+ has structure-dependent transitions due to the special microstructure occupied in a given host. |
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| Keywords: | Phosphates Solid-state reaction Optical properties Luminescence |
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