Ultrahigh Power Density LuAG:Ce Green Converters For High‐Luminance Laser‐Driven Solid State Lighting

Lu3Al5O12:Ce (LuAG:Ce) phosphor has been designed and fabricated into various forms of green fluorescent converters and plays a critical role in the field of solid‐state laser lighting. Phosphor in glass (PiG) and phosphor in glass film (PiGF) are expected to be viable strategies for high‐power and high‐brightness laser diode (LD) illumination due to their easy synthesis and low cost. In this study, LuAG:Ce‐PiG with an internal quantum efficiency of 90.5% is prepared by investigating the sintering conditions and combining with a borosilicate glass. It possesses a luminous flux (LF) of 584 lm and luminous efficiency (LE) of 225 lm W−1 @ 20 W mm−2. On this basis, LuAG:Ce‐PiG sapphire film (LuAG:Ce‐PiGSF) with high thermal conduction (10.26 W (m K) −1) is successfully sintered on the sapphire to obtain the LF of 833 lm and LE of 252 lm W−1 @ 36.36 W mm−2. The maximum tolerated power density can reach 45.45 W mm−2. In addition, when the color converters are placed in a commercial LD transmission module and continuously light for 24 h at 16.5 W, the relative light intensity only decreases by 14.15% and 12.82%, respectively. Therefore, it is believed that the work has promising applications in laser illumination and accelerating the development of LD lighting.

[1]  Yang Peng,et al.  Unique sandwich design of high-efficiency heat-conducting phosphor-in-glass film for high-quality laser-driven white lighting , 2022, Journal of Advanced Ceramics.

[2]  Qingming Huang,et al.  Highly Crystalline Y3Al5O12:Ce3+ Phosphor‐in‐Glass Film: A New Composite Color Converter for Next‐Generation High‐Brightness Laser‐Driven Lightings , 2022, Laser & Photonics Reviews.

[3]  Wenge Xiao,et al.  Phosphor‐in‐Silica‐Glass: Filling the Gap between Low‐ and High‐Brightness Solid‐State Lightings , 2022, Laser & Photonics Reviews.

[4]  Yang Peng,et al.  Heat-conducting LSN:Ce-in-glass film on AlN substrate for high-brightness laser-driven white lighting , 2022, Ceramics International.

[5]  Yu Wang,et al.  High-performance and heat-resistant Ce:YAG phosphor in glass for laser lighting , 2022, Journal of Alloys and Compounds.

[6]  Yu Wang,et al.  High-efficiency yellow-emitting La3Si6N11:Ce phosphor-in-glass for laser-driven white lighting , 2022, Ceramics International.

[7]  Yuansheng Wang,et al.  Toward High‐Quality Laser‐Driven Lightings: Chromaticity‐Tunable Phosphor‐in‐Glass Film with “Phosphor Pattern” Design , 2022, Laser & Photonics Reviews.

[8]  R. Xie,et al.  Thermally Robust Orange‐Red‐Emitting Color Converters for Laser‐Driven Warm White Light with High Overall Optical Properties , 2022, Laser & Photonics Reviews.

[9]  Wenge Xiao,et al.  Glass‐Crystallized Luminescence Translucent Ceramics toward High‐Performance Broadband NIR LEDs , 2022, Advanced science.

[10]  J. Qiu,et al.  Variation from Zero to Negative Thermal Quenching of Phosphor with Assistance of Defect States. , 2021, Inorganic chemistry.

[11]  Yuansheng Wang,et al.  β‐SiAlON:Eu2+ Phosphor‐in‐Glass Film: An Efficient Laser‐Driven Color Converter for High‐Brightness Wide‐Color‐Gamut Projection Displays , 2021, Laser & Photonics Reviews.

[12]  W. Xiang,et al.  Designed glass frames full color in white light-emitting diodes and laser diodes lighting , 2021 .

[13]  Xiaodong Liu,et al.  High color rendering index composite phosphor-in-glass for high-power white laser lighting , 2021 .

[14]  Jun Jiang,et al.  High Efficiency Green‐Emitting LuAG:Ce Ceramic Phosphors for Laser Diode Lighting , 2021, Advanced Optical Materials.

[15]  O. B. Jensen,et al.  Industry-friendly synthesis and high saturation threshold of a LuAG:Ce/glass composite film realizing high-brightness laser lighting , 2020, Journal of the European Ceramic Society.

[16]  C. Kucera,et al.  Effect of the Ce3+ concentration on laser-sintered YAG ceramics for white LEDs applications , 2020 .

[17]  O. B. Jensen,et al.  Comparative study of Al2O3-YAG:Ce composite ceramic and single crystal YAG:Ce phosphors for high-power laser lighting , 2020 .

[18]  J. Qiu,et al.  Highly efficient phosphor-glass composites by pressureless sintering , 2020, Nature Communications.

[19]  Jun Jiang,et al.  YAG:Ce3+ Transparent Ceramic Phosphors Brighten the Next‐Generation Laser‐Driven Lighting , 2020, Advanced materials.

[20]  Marco Bettinelli,et al.  Unraveling the Mechanisms of Thermal Quenching of Luminescence in Ce3+-Doped Garnet Phosphors , 2019, Chemistry of Materials.

[21]  Lihong Liu,et al.  A Thermally Robust La3Si6N11:Ce‐in‐Glass Film for High‐Brightness Blue‐Laser‐Driven Solid State Lighting , 2018, Laser & Photonics Reviews.

[22]  R. Xie,et al.  Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting , 2018, Laser & Photonics Reviews.

[23]  Song Hu,et al.  Pore-existing Lu 3 Al 5 O 12 :Ce ceramic phosphor: An efficient green color converter for laser light source , 2018 .

[24]  Takashi Takeda,et al.  Unique Color Converter Architecture Enabling Phosphor-in-Glass (PiG) Films Suitable for High-Power and High-Luminance Laser-Driven White Lighting. , 2018, ACS applied materials & interfaces.

[25]  Xuyuan Chen,et al.  Comparative study of blue laser diode driven cerium-doped single crystal phosphors in application of high-power lighting and display technologies , 2018 .

[26]  W. Im,et al.  A zero-thermal-quenching phosphor. , 2017, Nature materials.

[27]  Q. Su,et al.  All-Inorganic Light Convertor Based on Phosphor-in-Glass Engineering for Next-Generation Modular High-Brightness White LEDs/LDs , 2017 .

[28]  Z. Xia,et al.  Progress in discovery and structural design of color conversion phosphors for LEDs , 2016 .

[29]  Kai Wang,et al.  Heat and fluid flow in high-power LED packaging and applications , 2016 .

[30]  Sunghoon Lee,et al.  High power and temperature luminescence of Y3Al5O12:Ce3+ bulky and pulverized single crystal phosphors by a floating-zone method , 2015 .

[31]  Hongwei Lu,et al.  Advances in Transparent Glass-Ceramic Phosphors for White Light-Emitting Diodes---A Review , 2015 .

[32]  Y. Sugahara,et al.  Ce:(Y 1 − x ?> Lu x ?> ) 3 ?> Al 5 ?> O 12 ?> single-crystal phosphor plates for high-brightness white LEDs/LDs with high-color rendering (Ra > 90) and temperature stability , 2014 .

[33]  Jeffrey Y. Tsao,et al.  Comparison between blue lasers and light‐emitting diodes for future solid‐state lighting , 2013 .

[34]  Rolf Apetz,et al.  Transparent Alumina: A Light‐Scattering Model , 2003 .

[35]  Shuxing Li,et al.  Bi-Color Phosphor-in-Glass Films Achieve Superior Color Quality Laser-Driven Stage Spotlights , 2022, SSRN Electronic Journal.

[36]  Jian Xu,et al.  Design of laser-driven SiO 2 -YAG:Ce composite thick film: Facile synthesis, robust thermal performance, and application in solid-state laser lighting , 2018 .