Color-tunable up-conversion emission from Yb3+/Er3+/Tm3+/Ho3+ codoped KY(MoO4)2 microcrystals based on energy transfer |
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| Affiliation: | 1. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130000, China;2. School of Media and mathematics & Physics, Jilin Engineering Normal University, Changchun 130012,China;3. Changchun Normal University, Changchun 130000, China;4. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;1. Department of Electronics and Radio Engineering, Kyung Hee University, Yongin 446-701, Republic of Korea;2. Department of Microelectronic Science and Engineering, Ningbo University, 315211 Ningbo, China;3. Department of Biomedical Engineering & Healthcare Industry Research Institute, College of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea;1. School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China;2. Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province, Ganzhou, 341000, PR China;3. School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China;1. College of Optical and Electronic Technology, Jiliang University, Hangzhou 310018, People’s Republic of China;2. Hangzhou Electric Connector Factory, Hangzhou 310051, People’s Republic of China;3. College of Optical Science and Engineering, Key laboratory of Modern Optical Instrumental, Zhejiang University, Hangzhou 310063, People’s Republic of China;1. Huaiyin Normal University, 111 West Chang Jiang Road, Huai''an, 223300, China;2. Physics Department and Jiangsu Key Laboratory of Modern Measurement Technology and Intelligent, Huaiyin Normal University, 111 West Chang Jiang Road, Huai''an, 223300, China |
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| Abstract: | Tunable up-conversion luminescent material KY(MoO4)2: Yb3+, Ln3+ (Ln=Er, Tm, Ho) has been synthesized by a typical hydrothermal process. Under 980 nm laser diode (LD) excitation, the emission intensity and the corresponding luminescence colors of KY(MoO4)2: Yb3+, Ln3+ (Ln=Er, Tm, Ho) have been investigated in detail. The energy transfer from the Yb3+ sensitizer to Ho3+, Er3+ and Tm3+ activators plays an important role in the development of color-tunable single- phased phosphors. The emission intensity keep balance through control of the Ho3+ co-doping concentrations, white light was experimentally shown at KY(MoO4)2: 20 mol% Yb3+, 0.8 mol% Er3+, 0.5 mol% Tm3+, 1.0 mol% Ho3+ phosphor with further calcination at 800 °C for 4 h under 980 nm laser excitation. The color tunability, high quality of white light and high intensity of the emitted signal make these up-conversion (UC) phosphors excellent candidates for applications in solid-state lighting. |
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| Keywords: | B X-ray methods C Optical properties Energy transfer |
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