基于Ce^3+∶YAG透明陶瓷的大功率LED和LD照明原型器件的发光性能:厚度和表面粗糙度的影响  

Thickness and Surface Roughness Effect on Lighting Performance of Ce^3+∶YAG Transparent Ceramics Based High Power LED and LD Lighting Prototype Devices

作　　者：郑哲涵 张翔 徐小科[1] 刘茜[1,3] 石云 李茹[4] 王欢 王飞 刘光辉 ZHENG Zhe-han;ZHANG Xiang;XU Xiao-ke;LIU Qian;SHI Yun;LI Ru;WANG Huan;WANG Fei;LIU Guang-hui(State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Science,Beijing 100049,China;Changzhou Xingyu Automotive Lighting Systems Co.Ltd.,Changzhou 213022,China;Shanghai Institute of Laser Technology,Shanghai 200233,China)

机构地区：[1]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,上海200050 [2]福州大学材料科学与工程学院,福建福州350116 [3]中国科学院大学材料科学与光电研究工程中心,北京100049 [4]常州星宇车灯股份有限公司,江苏常州213022 [5]上海激光技术研究所,上海200233

出　　处：《发光学报》2020年第11期1411-1420,共10页Chinese Journal of Luminescence

基　　金：国家重点研发计划(2016YFB0701004);上海市科学技术委员会基金(18511110400);中国科学院战略性先导科技专项(XDA22000000);上海市科委扬帆人才计划(17YF1421500)资助项目。

摘　　要：采用高温真空烧结技术制备了0.5%Ce∶Y 3Al5O12(简称Ce∶YAG)透明荧光陶瓷,在透射模式下分别采用大功率蓝光发光二极管(LED)芯片(3.2 V×0.3 A)激发和LD蓝光光源(0.8 W,1.6 W)激发,系统研究了陶瓷厚度(0.3~2.3 mm)和表面粗糙度(322.86 nm,9.79 nm)等对照明原型器件的色温、显色指数和光电转换效率等发光性能的影响。结果表明,陶瓷表面有一定粗糙度可使原型器件的发光性能整体提高,其中用粗糙度为322.86 nm的Ce∶YAG透明陶瓷组装的原型器件分别获得了93.6 lm/W(蓝光LED激发)和178.5 lm/W(蓝光LD激发)的高光电转换效率。研究表明,通过调节Ce∶YAG透明陶瓷的厚度和表面状态,可有效提升高功率密度固态照明器件的发光性能。Ce∶Y 3Al 5O 12(Ce∶YAG)transparent phosphor ceramics were fabricated by solid state reaction method through vacuum sintering.The effects of thickness(0.3~2.3 mm)and surface roughness(322.86 nm,9.79 nm)of the ceramics on correlated color temperature,color rendering index,and photoelectric conversion efficiency were studied under the excitation of high power blue LED chip(3.2 V×0.3 A)and blue LD lighting(0.8 W,1.6 W).The luminescence property can also be improved by tuning the surface roughness of the ceramics,the Ce∶YAG transparent ceramics with a roughness of 322.86 nm obtained high luminescence efficiency of 93.6 lm/W(blue light LED excitation)and 178.5 lm/W(blue light LD excitation),respectively.The results show that the luminescence performance of high power density solid-state lighting devices can be effectively improved by adjusting the thickness and surface state of Ce∶YAG transparent ceramics.

关 键 词：Ce∶YAG 透明陶瓷 大功率LED 激光照明 光电转换效率 厚度 表面粗糙度 

分 类 号：TQ174[化学工程—陶瓷工业]