共沉淀法制备LuGG∶Ce纳米荧光粉及其发光性能研究  

Luminescent Properties of LuGG∶Ce Nanophosphor Synthesized via Co-Precipitation Method

作　　者：刘文鹏[1] 任浩 李泓沅 丁守军 张庆礼[1] LIU Wenpeng;REN Hao;LI Hongyuan;DING Shoujun;ZHANG Qingli(The Key Laboratory of Photonic Devices and Materials,Anhui Institute of Optics and Fine Mechanics,Chinese Academy ofSciences,Hefei 230031,China;School of Science and Engineering of Mathematics and Physics,Anhui University ofTechnology,Maanshan 243032,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,安徽省光子器件与材料重点实验室,合肥230031 [2]安徽工业大学数理科学与工程学院,马鞍山243032

出　　处：《人工晶体学报》2021年第2期325-330,共6页Journal of Synthetic Crystals

基　　金：The Joint Fund of Chinese Academy of Sciences(6141A01080302);National Key Research and Development Program of China(2016YFB0402101);University Natural Science Research Project of Anhui Province of China(KJ2019ZD06);National Natural Science Foundation of China(51702322,51802307);Fund of Key Laboratory of Optoelectronic Materials Chemistry and Physics,Chinese Academy of Sciences(2008DP173016)。

摘　　要：采用共沉淀法合成了Ce^(3+)掺杂的Lu_(3)Ga_(5)O_(12)(LuGG∶Ce)纳米荧光粉,采用Rietveld结构精修的方法确定了其结构参数。用扫描电子显微镜(SEM)测定了所合成纳米荧光粉的形貌。在365 nm激发光激发下,观测到的发射光谱呈非对称宽带,中心波长为438 nm。通过高斯拟合得到该发射谱带包含中心波长分别为426 nm和470 nm的两个发射峰。LuGG∶Ce的发光色度坐标为(0.1769,0.1803),对应为蓝光发射。结果表明,LuGG∶Ce适用于通过紫外光(UV)激发实现蓝光发射,在紫外光(UV)激发白光LED领域具有潜在的应用前景。Ce^(3+)doped Lu_(3)Ga_(5)O_(12)(LuGG∶Ce)nanophosphor was synthesized via co-precipitation method.Its structured parameters were obtained by Rietveld refinement method.The morphology of the as-synthesized nanophosphor was determined with Scanning Electron Microscope(SEM).Under 365 nm excitation,the emission spectrum exhibits an asymmetry broad band with central wavelength at 438 nm and this broad band can be deconvolved into two peaks with wavelength centers at around 426 nm and 470 nm,respectively.The chromaticity coordinate of LuGG∶Ce is(0.1769,0.1803),which corresponds to blue light emission.The results show LuGG∶Ce is suitable for realizing blue light emission under UV excitation and thus has potential applications in the fields of UV-excited white light emitting diodes(LEDs).

关 键 词：LuGG∶Ce 纳米荧光粉 共沉淀法 紫外光激发 白光LED 发光性能 

分 类 号：TQ422.2[化学工程]