简介概要

White light-emitting Ba0.05Sr0.95WO4:Tm3+ Dy3+ phosphors

来源期刊:Journal of Rare Earths2018年第4期

论文作者:Desheng Zhu Congkai Wang Feng Jiang

文章页码:346 - 352

摘    要:Tm3+ and Dy3+ co-doped Ba0.05Sr0.95WO4 phosphors were synthesized by a low temperature combustion method. The structures of the samples were SrWO4 phase and were identified by X-ray diffraction. The surface topographies of Ba0.05Sr0.91WO4:0.01 Tm3+ 0.03 Dy3+ were tested by scanning electron microscopy. The particles are ellipsoid, and their average diameter is approximately 0.5 μm. The emission spectra of Ba0.05Sr0.95WO4:Tm3+ show a peak at 454 nm which belongs to the 3 H61 D2 transition of Tm3+, and the optimum doping concentration of Tm3+ ions was 0.01. The emission spectra of Ba0.05Sr0.95WO4:Dy3+ consist of the 4 F9/26 H13/2 dominant transition located at 573 nm, the weaker 4 F(9/26 H15/2 transition located at 478 and 485 nm. and the weakest 4 F9/26 H11/2 transition located at660 nm, and the optimum doping concentration of Dy3+ ions was 0.05. A white light is achieved from Tm3+ and Dy3+ co-doped Ba0.05Sr0.95MoO4 crystals excited at 352-366 nm. With the doping concentration of Tm3+ fixed at 0.01, the luminescence of Ba0.05Sr0.95MoO4:Tm3+Dy3+ is closest to standard white-light emissions when the concentration of Dy3+ is 0.03; the chromaticity coordinates are(0.321,0.347), and the color temperature is 6000 K.

详情信息展示

White light-emitting Ba0.05Sr0.95WO4:Tm3+ Dy3+ phosphors

Desheng Zhu1,2,3,Congkai Wang1,Feng Jiang1,2

1. School of Materials Science and Engineering,Central South University2. Light Alloy Research Institute, Central South University3. School of Physics and Optoelectronic Engineering Yangtze University

摘 要:Tm3+ and Dy3+ co-doped Ba0.05Sr0.95WO4 phosphors were synthesized by a low temperature combustion method. The structures of the samples were SrWO4 phase and were identified by X-ray diffraction. The surface topographies of Ba0.05Sr0.91WO4:0.01 Tm3+ 0.03 Dy3+ were tested by scanning electron microscopy. The particles are ellipsoid, and their average diameter is approximately 0.5 μm. The emission spectra of Ba0.05Sr0.95WO4:Tm3+ show a peak at 454 nm which belongs to the 3 H61 D2 transition of Tm3+, and the optimum doping concentration of Tm3+ ions was 0.01. The emission spectra of Ba0.05Sr0.95WO4:Dy3+ consist of the 4 F9/26 H13/2 dominant transition located at 573 nm, the weaker 4 F(9/26 H15/2 transition located at 478 and 485 nm. and the weakest 4 F9/26 H11/2 transition located at660 nm, and the optimum doping concentration of Dy3+ ions was 0.05. A white light is achieved from Tm3+ and Dy3+ co-doped Ba0.05Sr0.95MoO4 crystals excited at 352-366 nm. With the doping concentration of Tm3+ fixed at 0.01, the luminescence of Ba0.05Sr0.95MoO4:Tm3+Dy3+ is closest to standard white-light emissions when the concentration of Dy3+ is 0.03; the chromaticity coordinates are(0.321,0.347), and the color temperature is 6000 K.

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