Preparation and upconversion luminescence modification of YbPO4:Er3+inverse opal heterostructure

作     者：Zhuangzhuang Chai Zhengwen Yang Anjun Huang Chengye Yu Jianbei Qiu Zhiguo Song 

作者机构：College of Materials Science and EngineeringKunming University of Science and Technology 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2017年第35卷第12期

页      面：1180-1185页

核心收录：

学科分类：081702[工学-化学工艺] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：Project supported by the National Natural Science Foundation of China(11674137) the Applied Basic Research Program of Yunnan Province(2014FB127) Reserve Talents Project of Yunnan Province(2012HB068) Talent Youth Science Foundation of College of Materials Science and Technology,Kunming University of Science and Technology(20140205) 

主　　题：Photonic crystal Heterostructures Upconversion luminescence Modification 

摘      要：Photonic crystal heterostructures composed of YbPO4：Er^（3＋） inverse opal and polystyrene opal were prepared via a template-assisted process, which exhibited two photonic band gaps. The microstructure,phase and optical properties of photonic crystal heterostructures were investigated by x-ray diffraction,scanning electron microscopy, fluorescence spectroscopy, absorption spectroscopy, fluorescence lifetime,etc. The upconversion emission suppression caused by single photonic band gap from the following YbPO4：Er^（3＋） inverse opal or the upper opal was observed. The upconversion luminescence was strongly suppressed due to the two photonic band gap overlapping effect caused by the following YbPO4：Er^（3＋） inverse opal or the upper opal. The modified mechanisms of upconversion luminescence were discussed by the upconversion luminescence lifetime of YbPO4：Er^（3＋） photonic crystal heterostructures. The results demonstrated the modified upconversion luminescence is attributed to the photon trapping caused by Bragg reflection of photonic crystal heterostructures.