Near-infrared photo-responsive Er3+-K+ co-doped Y2O3 phosphors with enhanced UC luminescence |
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| Affiliation: | 1. College of Physics and Electronic Information & Key Laboratory of Electromagnetic Transformation and Detection of Henan Province, Luoyang Normal University, Luoyang, 471934, China;2. School of Physics and Electronic Engineering, Sichuan University of Science & Engineering, Zigong, 643000, China;3. Department of Applied Physics, College of Mathematics and Physics, Chengdu University of Technology, Chengdu, 610059, China;4. School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China;5. Senba Sensing Technology Co., Ltd., NanYang, 473300, China;1. Centre for Textile Science and Engineering (CTSE), Department of Materials, Textiles and Chemical Engineering (MaTCh), Faculty of Engineering and Architecture Ghent University, Technologiepark 70a, 9052, Ghent, Belgium;2. Sol-gel Centre for Research on Inorganic Powders and Thin Films (SCRiPTS), Department of Chemistry, Faculty of Sciences Ghent University, Krijgslaan 281 S3, 9000, Ghent, Belgium;1. Modern Industry School of Advanced Ceramics, Hunan Provincial Key Laboratory of Fine Ceramics and Powder Materials, School of Materials and Environmental Engineering, Hunan University of Humanities, Science and Technology, Loudi, Hunan, 417000, China;2. National Electronic Ceramic Product Quality Supervision and Inspection Center, Loudi, Hunan, 417000, China;3. College of Optoelectronic Manufacturing, Zhejiang Industry & Trade Vocational College, Wenzhou, Zhejiang, 325003, China;4. Hunan Province Xinhua County Xinxing Electron Ceramics Co., Ltd, Xinhua, Hunan, 417000, China;5. Xinhua Shunda Electronic Ceramics Co., Ltd., Xinhua, Hunan, 417000, China |
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| Abstract: | Y2O3: x% Er3+ (x=5, 7, 10, 12, 15) and Y2O3: 10% Er3+，x% K+ (x=0, 1, 3, 5, 7, 10, 15) phosphors were successfully prepared by a low-temperature combustion method. The structure as well as the absorption/emission spectra of phosphors were investigated. The effect of doping concentration of K+ ions on the upconversion (UC) luminescence of Y2O3: 10% Er3+ phosphor was examined and the possible optical transitions were discussed. The results showed that K+ ion doping not only changed the microstructure and crystallinity of the phosphors, but also enhanced its UC luminescence intensity. The Y2O3: 10% Er3+, 7% K+ phosphor exhibit the strongest UC emission intensity. Compared with the Y2O3: 10% Er3+ phosphor, the UC luminescence intensity at 563 nm and 661 nm was enhanced by 67.8 and 27.3 times for the K-codoped samples, respectively. The phosphor with the optimal doping concentration was mixed with a polymer to form a composite film, which was employed for the fabrication of near-infrared (NIR) photo-responsive detection devices. The device exhibited strong photo-current response to NIR light at 980 nm, implying that our work could inspire new design strategy for the development of NIR photo-detection devices. |
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| Keywords: | Rare-earth ions UC Photoluminescence Photo-responsive detection |
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