Phase evolution and photoluminescence in Er3+ doped glass ceramics containing lutetium oxyfluoride nanocrystals |
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| Affiliation: | 1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 10081, China;2. National Key Laboratory of Science and Technology on Materials under Shock and Impact, Beijing 10081, China;3. School of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China;4. School of Environmental and Materials Engineering, Yantai University, Yantai 264005,China;1. College of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, China;2. Laboratoire Verres & Céramiques, UMR CNRS 6226, Université de Rennes 1, Campus Beaulieu, 35042 Rennes Cedex, France;1. College of Electronic and Optical Engineering &College of Microelectronics, Nanjing University of Posts and Telecommunications, Wenyuan Road 9, Nanjing 210023, China;2. School of Material Science and Engineering, Jiangxi University of Science and Technology, No.86, Hongqi Ave., Ganzhou, Jiangxi 341000, China |
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| Abstract: | Crystalline phase evolution through merely adjusting composition was achieved in silicate glass ceramics containing LunOn-1Fn+2 (n = 5–10) nanocrystals. Orthorhombic or cubic phase nanocrystals were precipitated in the aluminosilicate glass matrix after thermal treatment together with varying the Na2O/NaF ratio. Oxyfluoride nanocrystals with quasi-spherical shape show homogenous and dense distribution in glass matrix by transmission electron microscopy measurement. Intense upconversion and mid-infrared emissions were realized in these glass ceramics compared to the precursor glass, and the emission spectral shapes, relative emission intensity and fluorescence decay curves of Er3+ in cubic LuOF embedded samples exhibit remarkable differences due to the crystal phase dependent effect in glass ceramics. These results indicate that the crystallization and luminescence properties of oxyfluoride glass ceramics could be modified through the alteration of glass composition, which could be used for the development of novel glass ceramics and design of luminescent properties. |
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| Keywords: | B. Nanocomposites D. Glass D. Glass ceramics Luminescence |
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