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作 者:Shisheng Lin Hang Lin Hongyi Yang Pengfei Wang Ping Sui Ju Xu Yao Cheng Yuansheng Wang
机构地区:[1]Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,350002,China [2]Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou,350108,China [3]Xiamen Institute of Rare-earth Materials,Haixi Institutes,Chinese Academy of Sciences,Xiamen,36100,China [4]College of Chemistry and Materials Science,Fujian Normal University,Fuzhou,350007,China
出 处:《Journal of Rare Earths》2024年第11期2051-2057,I0002,共8页稀土学报(英文版)
基 金:Project supported by the National Natural Science Foundation of China(U2005213,51972303,11974350);Science Fund for Distinguished Young Scholars of Fujian Province(2022J06030);Science Fund of Fujian Province(2022J05091);Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China(2021ZR134);the STS Project of Fujian-CAS(2022T3069)。
摘 要:The pursuit of high-brightness solid-state lighting(SSL)stimulates the development of all-inorganic color converters with high robustness.It is required that the fluorescent material is able to cope with the extreme condition generated from the irradiation of high-power-density excitation light.As such,in this work,we developed a new composite color converter,i,e.,Y_(3)Al_(5)O_(12):Ce^(3+)phosphor-in-silica glass ceramic(YAG:Ce^(3+)PiSGC).Remarkably,the amorphous SiO_(2)matrix spontaneously transforms into tetragonal SiO_(2)crystallites during co-sintering with crystallization fraction reaching up to>90%(almost full ceramization).The activation energy for crystallization E_(c)and Avrami index n of amorphous silica oxide are 298.5 kJ/mol and 1.71,indicating the diffusion-controlled glass crystallization mechanism.The fabricated prototype high-power phosphor-converted white light-emitting diode(pc-wLED)and phosphor-converted white laser diode(pc-wLD)based on YAG:Ce^(3+)PiSGC show satisfactory photometric/colorimetric parameters.The developed color co nverters have combined merits of environmental protection property,cost-effective manufacturing,good luminescent performance,and easy scalability.This study highlights a new kind of opto-functional composite material and its application as an efficient color converter in high-power solid-state lightings.
关 键 词:Glass ceramics Y_(3)Al_(5)O_(12):Ce^(3+) Laser-driven white light White light-emitting diode Rare earths
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