Progress in discovery and structural design of color conversion phosphors for LEDs |
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| Affiliation: | 1. Interdisciplinary Program of LED and Solid State Lighting Engineering, Pukyong National University, Busan 608-737, Korea;2. Department of Display Science and Engineering, Pukyong National University, Busan 608-737, Korea;3. LED-Marine Convergence Technology R&BD Center, Pukyong National University, Busan 608-739, Korea;1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China;2. Sialon Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan;3. Nano Device Characterization Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan;4. College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China;5. Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia;6. Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russia;7. College of Materials, Xiamen University, Xiamen, China;1. College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China;2. College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, PR China;1. Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University, Nankoku, 783-8502, Japan;2. Center for Advanced Marine Core Research, Kochi University, Nankoku, 783-8502, Japan;3. Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-nocho, Niigata 950-2181, Japan;4. Electronic Convergence Materials Division, Optic and Display Materials Center, Korea Institute of Ceramic Engineering and Technology, 101 Soho-ro, Jinju-si, Republic of Korea;5. Department of Chemistry and Chemical Engineering, Niigata University, 8050 Ikarashi 2-nocho, Niigata 950-2181, Japan |
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| Abstract: | Phosphor materials enable the optical frequency conversion to realize the full-color white emission light-emitting diodes (LEDs). So far much effort has been devoted to the design and discovery of novel LED phosphors for solid state lighting. In this review, firstly, we briefly describe several representative families of LED phosphors. Secondly, we propose the design methodology aimed at discovery of new phosphors with focus on the crystal structural considerations. Thirdly, we review the results of our work and other researchers on the recent advances in discovery and structural design of LED phosphors that exemplify the adopted strategies, including (1) design of the novel phosphors from the existed structural models, (2) discovery of novel phosphors from new crystal materials by doping and (3) structural modification of the known phosphors. The importance on the structure-property relations and recently reported methodologies involved in the crystal chemistry analysis for the discovery of LED phosphors, including mineral-inspired structural model design, exploratory crystal growth via single particle diagnostic approach, chemical unit cosubstitution, and so on, have been summarized in this review. We finally discuss the topics of structure-related active investigations and future opportunities for new and improved host materials for the color conversion applied in LEDs. |
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| Keywords: | LEDs phosphors Photoluminescence Crystal structure |
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