2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation | |
Luminescence properties of Tb3+ doped Gd2(WO4)3 phosphor prepared by hydrothermal method | |
材料科学;机械制造;运输工程 | |
Zhang, Zhengyang^1 ; Li, Jinkai^1 ; Wang, Wenzhi^1 ; Zhao, Weilin^1 ; Liu, Zongming^1 | |
College of Materials Science and Engineering, University of Jinan, China^1 | |
关键词: Color temperatures; Exchange reaction; Fluorescence decays; Fluorescence lifetimes; Hydrothermal methods; Luminescence properties; Quenching concentration; White-light LEDs; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022095/pdf DOI : 10.1088/1757-899X/382/2/022095 |
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学科分类:材料科学(综合) | |
来源: IOP | |
【 摘 要 】
The Gd2(WO4)3:Tb3+ phosphors have been successfully prepared using the hydrothermal method calcined at 900°C in this work. The crystal structure, PLE/PL and fluorescence decay behavior of samples were investigated in detail. Under the 270 nm excitation (4f8→4f75d1 transition of Tb3+), the (Gd2-xTbx)(WO4)3 (x=0.01-0.15) phosphors emit the strong green emission at 547 nm (5D4→7F5 transition of Tb3+). The quenching concentration was found to be ∼10% owing to the exchange reaction between Tb3+. The Tb3+ addition did not influence the CIE chromaticity coordinates (∼0.33±0.02, ∼0.60±0.02) and color temperatures (∼5542 K) of the (Gd2-xTbx)(WO4)3 phosphors. However, due to the energy transfer between Tb3+, the fluorescence lifetime for 547 nm emission decreased with the Tb3+ content increasing. The Gd2(WO4)3:Tb3+ phosphors with strong green emission are expected to be widely used in white light LED and display areas.
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