Low temperature molten salt synthesis of YAG: Ce spherical powder and its thermally stable luminescent properties after post-annealing treatment |
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| Institution: | 1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;2. Key Laboratory of Advanced Ceramics and Machining Technology, Ministry of Education, Tianjin University, Tianjin 300072, China;1. Institute of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China;2. School of Material Science and Engineering, Jiangsu University, Xuefu Road 301, Zhenjiang 212013, China;1. Department of Physics, National Institute of Technology, Raipur 492 010, India;2. School of Studies in Physics and Astrophysics, Pt. Ravishankar Shukla University, Raipur 492 010, India;1. School of Semiconductor and Chemical Engineering, Semiconductor Physics Research Center, Chonbuk National University, Jeonju 561-756, South Korea;2. NTT Hi-Tech Institute, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh Street, Ho Chi Minh City, Vietnam |
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| Abstract: | Spherical YAG: Ce particles were successfully synthesized at 350 °C by the molten-salt method. The effect of temperature and amount of salt on the crystallization and particle size of YAG: Ce were investigated thoroughly. The results demonstrated that the powders prepared at 350 °C in salt to reactant ratio 2:1 were pure YAG: Ce phase with 200–300 nm in particle size. The as-synthesized phosphors were later post annealed at 1200 °C in O2, air and N2, respectively. The results showed that the emission intensity of YAG: Ce sensitively depended on the post-treated atmosphere and the phosphor annealed in N2 showed the highest emission intensities and a good thermal stability. |
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| Keywords: | YAG: Ce Molten salt Luminescence properties The amount of salt Post annealing |
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