Electronic Structure and Luminescence Properties of Phosphor Li8 Bi2 (MoO4 )7 : Dy3+
作者： Jin Zhao , Chongfeng Guo , Xiangying Su , Hyeon Mi Noh , Jung Hyun Jeong
DOI: 10.1111/JACE.12863
关键词:
摘要: Dy3+-doped Li8Bi2(MoO4)7 (LBM: Dy3+) white-emitting phosphors have been prepared by sol-gel method at about 400~550°C low temperature. The electronic structure of is also calculated using density functional theory. calculation results show that has a direct band gap with 2.63 eV, the top valence and bottom conduction are dominated O 2p Mo 4d, respectively. effect from Bi3+ ions so weak it could be neglected, which proved experimental results. crystal luminescent properties obtained characterized powder X-ray diffraction photoluminescence spectrum, Photoluminescence showed can excited efficiently near-UV 387 nm generated white light emission. yellow/blue ratio Commission International de I'Eclairage color coordinates tuned adjusting concentration Dy3+. Results demonstrated Li8Bi2(MoO4)7: Dy3+ was potential light-emitting phosphor candidate for NUV-based w-LEDs.
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