Glass crystallization making red phosphor for high-power warm white lighting. - Details

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Rapid　development　of　solid-state　lighting　technology　requires　new　materials　with　highly　efficient　and　stable　luminescence,　and　especially　relies　on　blue　light　pumped　red　phosphors　for　improved　light　quality.　Herein,　we　discovered　an　unprecedented　red-emitting　Mg2Al4Si5O18:Eu2+　composite　phosphor　(λex　=　450　nm,　λem　=　620　nm)　via　the　crystallization　of　MgO-Al2O3-SiO2　aluminosilicate　glass.　Combined　experimental　measurement　and　first-principles　calculations　verify　that　Eu2+　dopants　insert　at　the　vacant　channel　of　Mg2Al4Si5O18　crystal　with　six-fold　coordination　responsible　for　the　peculiar　red　emission.　Importantly,　the　resulting　phosphor　exhibits　high　internal/external　quantum　efficiency　of　94.5/70.6%,　and　stable　emission　against　thermal　quenching,　which　reaches　industry　production.　The　maximum　luminous　flux　and　luminous　efficiency　of　the　constructed　laser　driven　red　emitting　device　reaches　as　high　as　274　lm　and　54　lm　W-1,　respectively.　The　combinations　of　extraordinary　optical　properties　coupled　with　economically　favorable　and　innovative　preparation　method　indicate,　that　the　Mg2Al4Si5O18:Eu2+　composite　phosphor　will　provide　a　significant　step　towards　the　development　of　high-power　solid-state　lighting.

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[ 1 ] [Hu Tao]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China
[ 2 ] [Ning Lixin]Anhui Key Laboratory of Optoelectric Materials Science and Technology, Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Normal University, Wuhu, Anhui, China. ninglx@mail.ahnu.edu.cn
[ 3 ] [Gao Yan]School of Applied Physic and Materials, Wuyi University, Jiangmen, Guangdong, China
[ 4 ] [Qiao Jianwei]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China
[ 5 ] [Song Enhai]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China
[ 6 ] [Chen Zitao]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China
[ 7 ] [Zhou Yayun]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China
[ 8 ] [Wang Jing]Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, China
[ 9 ] [Molokeev Maxim S]Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
[ 10 ] [Ke Xiaoxing]Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology Beijing, Beijing, China
[ 11 ] [Xia Zhiguo]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China. xiazg@scut.edu.cn
[ 12 ] [Zhang Qinyuan]School of Physics and Optoelectronics, State Key Laboratory of Luminescent Materials and Devices and Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou, Guangdong, China. qyzhang@scut.edu.cn

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Light, science & applications

ISSN： 2047-7538

Year： 2021

Issue： 1

Volume： 10

Page： 56

ESI Discipline： PHYSICS;

ESI HC Threshold：72

JCR Journal Grade：1

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WoS CC Cited Count：

SCOPUS Cited Count： 168

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 2

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材料科学与工程学院本学院/部未明确归属的数据

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