用于激光照明的荧光粉@SiO_(2)气凝胶复合发光材料的制备与发光性能研究  

Preparation and luminescence performance of phosphor@SiO_(2) aerogelcomposite luminescent material for laser illumination

作　　者：冯杰[1] 高燕[1] 朱家艺[1] 毕于铁[1] 任洪波[1,2] Feng Jie;Gao Yan;Zhu Jiayi;Bi Yutie;Ren Hongbo(Joint Laboratory for Extreme Conditions Matter Properties,School of Mathematics and Physics,Southwest University of Science and Technology,Mianyang 621010,China;State Key Laboratory of Environment-friendly Energy Materials,Southwest University ofScience and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学数理学院极端条件物质特性联合实验室,四川绵阳621010 [2]西南科技大学环境友好能源材料国家重点实验室,四川绵阳621010

出　　处：《强激光与粒子束》2024年第6期59-67,共9页High Power Laser and Particle Beams

基　　金：环境友好能源材料国家重点实验室自主基金项目(21fksy28);反应堆燃料与材料重点实验室基金项目(STRFML-2021-02、STRFML-2021-10)。

摘　　要：通过溶胶-凝胶法成功制备了Tb_(3)Al_(5)O_(12)(TAG)荧光粉。热分析数据证实,增加H_(3)BO_(3)摩尔比会导致最终相的转变温度降低。同时,通过扫描电镜观察到,H_(3)BO_(3)摩尔比的提高会导致荧光粉颗粒尺寸增大。在激发波长为275 nm的条件下,发射光谱在480~650 nm范围内出现了由Tb^(3+)的5d→4f跃迁产生的多个发射峰。然后通过物理掺杂和超临界干燥工艺成功制备了荧光粉@SiO_(2)气凝胶复合发光材料。与荧光粉相比,荧光粉@SiO_(2)气凝胶复合发光材料的内量子产率显著增加,可达63.64%。采用波长为355 nm的激光源激发荧光粉@SiO_(2)气凝胶复合发光材料,可实现长距离无导线方式发光,并具有良好均匀性。以上结果证明了荧光粉@SiO_(2)气凝胶复合发光材料在激光应急照明领域具有潜在的应用前景。The preparation of Tb_(3)Al_(5)O_(12)(TAG)phosphors was fabricated by the sol-gel method.Thermalanalysis data confirm that an increase in the H_(3)BO_(3) molar ratio correlates with a reduction in the transition temperatureof the final phase.Concurrently,scanning electron microscopy revealed that an elevated H_(3)BO_(3) molar ratio results inlarger phosphor particle sizes.Under the excitation wavelength of 275 nm,the emission spectrum manifests multiplepeaks within the 480-650 nm range,originating from the 5d→4f transitions of Tb^(3+) ions.Subsequently,thephosphor@SiO_(2) aerogel composite luminescent material was successfully synthesized through a combination ofphysical doping and a supercritical drying process.This composite luminescent material exhibited a substantialincrease in the internal quantum yield,reaching 63.64% compared to the standalone phosphor.Excited by a 355 nmlaser source,the phosphor@SiO_(2) aerogel composite luminescent material demonstrated the capability for wire-free,long-distance luminescence with commendable uniformity.These findings demonstrate the potential applicationprospects of the phosphor@SiO_(2) aerogel composite luminescent material in the domain of laser emergency lighting.

关 键 词：溶胶-凝胶法 TAG荧光粉 荧光粉@SiO_(2)气凝胶复合发光材料 内量子产率 激光源激发 

分 类 号：O469[理学—凝聚态物理]