High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneouslypossess excellent optical performance and superior heat dissipation.Herein,a reflective sand...High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneouslypossess excellent optical performance and superior heat dissipation.Herein,a reflective sandwich color converter of phosphor-in-glass film with sapphire and alumina(sapphire@PiGF@alumina,abbreviated as S@PiGF@A)is designed and prepared via a thermocompression bonding method.Owing to the high thermal conductivity and double-sided heat dissipation channels of alumina and sapphire,the S@PIGF@A color converter can withstand high laser power density and produce ultrahigh luminescence.Consequently,the optimized S@PIGF@A converter yields white light with an ultrahigh luminous flux of 6749 Im at a laser power density saturation threshold of 47.70 W/mm,which is 2.44 times that of traditional PIGF@alumina colorl converter(2522 Im@19.53 W/mm).These findings provide valuable guidelines to design high-quality PiGF color converter for high-brightness laser-driven white lighting.展开更多
基金supported by the Key Research and Development Program of Guanzgxi Zhuang Autonomous Region(No.AB25069373)the Science and Technology Project of Shenzhen City(No.JCYJ20230807110907016)+1 种基金the Guangdong Basic and Applied Basic Research Foundation(Nos.2024A1515010001 and 2024A1515011445)the Shenzhen Postdoctoral Research Funding Project.
文摘High-brightness laser lighting faces grave challenges in the development of laser-driven color converters that simultaneouslypossess excellent optical performance and superior heat dissipation.Herein,a reflective sandwich color converter of phosphor-in-glass film with sapphire and alumina(sapphire@PiGF@alumina,abbreviated as S@PiGF@A)is designed and prepared via a thermocompression bonding method.Owing to the high thermal conductivity and double-sided heat dissipation channels of alumina and sapphire,the S@PIGF@A color converter can withstand high laser power density and produce ultrahigh luminescence.Consequently,the optimized S@PIGF@A converter yields white light with an ultrahigh luminous flux of 6749 Im at a laser power density saturation threshold of 47.70 W/mm,which is 2.44 times that of traditional PIGF@alumina colorl converter(2522 Im@19.53 W/mm).These findings provide valuable guidelines to design high-quality PiGF color converter for high-brightness laser-driven white lighting.
