Lu2SrAl4SiO12∶Ce3+ Phosphor in Glass Film-on-sapphire and Its Application to Laser Lighting

Peng-fei WANG; Ping SUI; Shi-sheng LIN; Hang LIN; Yuan-sheng WANG

doi:10.37188/CJL.20210152

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Lu₂SrAl₄SiO₁₂∶Ce³⁺ Phosphor in Glass Film-on-sapphire and Its Application to Laser Lighting

Invited Paper | 更新时间：2021-10-17

- Lu₂SrAl₄SiO₁₂∶Ce³⁺ Phosphor in Glass Film-on-sapphire and Its Application to Laser Lighting
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 10, Pages: 1493-1501(2021)
- 作者机构：
  
  1.中国科学院福建物质结构研究所　中国科学院光电材料化学与物理院重点实验室，福建　福州　 350002
  2.福建师范大学　化学与材料学院，福建　福州　 350007
  3.中国福建光电信息科学与技术创新实验室(闽都创新实验室)，福建　福州　 350108
- 作者简介：
- 基金信息：
- DOI：10.37188/CJL.20210152
  CLC：
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Peng-fei WANG, Ping SUI, Shi-sheng LIN, et al. Lu₂SrAl₄SiO₁₂∶Ce³⁺ Phosphor in Glass Film-on-sapphire and Its Application to Laser Lighting. [J]. Chinese Journal of Luminescence 42(10):1493-1501(2021)
DOI：

Peng-fei WANG, Ping SUI, Shi-sheng LIN, et al. Lu₂SrAl₄SiO₁₂∶Ce³⁺ Phosphor in Glass Film-on-sapphire and Its Application to Laser Lighting. [J]. Chinese Journal of Luminescence 42(10):1493-1501(2021) DOI： 10.37188/CJL.20210152.

摘要

“激光+荧光转换材料”产生强白光的方案已成为当下照明领域的研究热点之一。本文基于低温共烧技术制备了一种镶嵌Lu,2,SrAl,4,SiO,12,∶Ce,3+,(LSAS∶Ce,3+,)荧光粉的玻璃陶瓷膜-蓝宝石复合材料。研究表明，共烧时LSAS∶C,3+,荧光粉受到的热侵蚀较少，共烧前后量子效率(~90%)未发生显著变化；并且该材料具有十分优异的抗热猝灭性能，~300 ℃时荧光积分强度仍保持了室温下的~70%，远优于YAG∶Ce,3+,商用荧光粉。当蓝光激光功率密度达到3.0 W/mm,2,时，材料产生发光饱和，此时光通量为100.49 lm，满足室内照明需求。我们推测，热致饱和与光致饱和是发光亮度无法进一步提升的原因所在。相信通过材料组分、制备工艺的优化和光场调控手段的引入，可进一步提高发光亮度，使之适用于户外照明。

Abstract

"Laser+conversion material" strategy has become one of the hotspots in lighting field. Herein, a phosphor in glass film sintered on sapphire plate(PiG film-on-SP) embedded with Lu,2,SrAl,4,SiO,12,∶Ce,3+,(LSAS∶Ce,3+,) phosphor was prepared ,via, low temperature co-sintering method.It was demonstrated that LSAS∶Ce,3+, phosphor was less corroded by glass components during co-sintering, and so, the high quantum efficiency(~90%) was retained. Meanwhile, this material has better thermal quenching performance than commercial YAG∶Ce,3+,phosphor. The fluorescence integral intensity at ~300 ℃ remains~70% of that at room temperature. "Luminescence saturation" takes place under 3.0 W/mm ,2, blue laser irradiation, and the corresponding luminous flux is 100.49 lm, applicable to in-door scenarios. It was speculated that thermal saturation and optical saturation simultaneously occur, restricting the achievable brightness.After optimization of material composition, preparation process, as well as employing the light field regulation method, LSAS∶Ce,3+,PiG film-on-SP with higher brightness will be hopefully applicable to out-door scenarios.

关键词

激光照明荧光粉荧光玻璃陶瓷石榴石结构

Keywords

laser lightingphosphorluminescent glass ceramicsgarnet structure

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