Nd:YbAG纳米晶的制备与光谱性能  

Preparation and Spectral Performance of Nd:YbAG Nanocrystalline

作　　者：王丹[1] 林海[1] 李春[1] 刘景和[1] 曾繁明[1] 

机构地区：[1]长春理工大学光电功能材料教育部工程研究中心,长春130022

出　　处：《硅酸盐学报》2015年第11期1611-1616,共6页Journal of The Chinese Ceramic Society

基　　金：长春市科技计划(14KP017/14GH011)资助项目

摘　　要：采用碳酸盐共沉淀法制备了钕掺杂镱铝石榴石(Nd:Yb3Al5O12;Nd:Yb AG)纳米晶。研究了合成溶液的p H值、煅烧温度和Nd3+掺杂量等对样品的相组成、形貌和发光性能的影响。结果表明:样品结构与Yb AG结构相符合;Nd:Yb AG纳米晶平均粒度约为50 nm。Nd3+掺杂的摩尔分数为3.5%时,样品的上转换蓝光最强,对应Nd3+的2G9/2→4I9/2能级跃迁;Nd3+掺杂量为1.5%时,上转换绿光最强,对应Nd3+的2G7/2→4I9/2能级跃迁;当Nd3+掺杂量为3%时,近红外区荧光性能最佳,对应Nd3+的4F3/2→4I11/2能级跃迁,样品具备良好的发光特性。Neodymium-doped ytterbium aluminium garnet（Nd：Yb3Al5O12, Nd：Yb AG） nanocrystalline was prepared by a co-precipitation method with ammonium bicarbonate as a precipitating agent. Effects of p H value of synthesis solution, calcination temperature and Nd doping amount on the phase composition, morphology and luminescence properties of the samples were investigated. The results show that the structure of the sample belongs to the Yb AG structure. The average size of Nd：Yb AG nanocrystalline is approximately 50 nm. The luminescence characteristics of Nd：Yb AG sample are superior at Nd3＋ doping amount of 3.5%（mole fraction）. The most intense upconversion blue light is obtained, which is corresponding to the 2G9/2 → 4I9/2 level transition of Nd3＋. The most intense upconversion green light is procured at Nd3＋ doping amount of 1.5%, which is corresponding to the 2G7/2 → 4I9/2 level transition of Nd3＋. The optimal near infrared fluorescence performance is manifested at Nd3＋ doping amount of 3.0%, which is corresponding to the 4F3/2 → 4I11/2 level transition of Nd3＋.

关 键 词：钕掺杂镱铝石榴石 纳米晶 共沉淀法 荧光光谱 

分 类 号：TQ133.3[化学工程—无机化工]