Size-controlled synthesis and red up-converted luminescence of CeO_(2):Yb^(3+)/Er^(3+) nanospheres  

作　　者：Xiaoqi Zhao Yami Ling Hao Suo Zhiyu Zhang Jiangrui Bai Chongfeng Guo 

机构地区：[1]College of Physics and Optoelectronic Technology&Advanced Titanium Alloys and Functional Coatings Cooperative Innovation Center,Baoji University of Arts and Sciences,Baoji,721016,China [2]State Key Laboratory of Photon-Technology in Western China Energy,Institute of Photonics&Photon-Technology,Northwest University,Xi'an,710127,China

出　　处：《Journal of Rare Earths》2023年第10期1487-1493,I0001,共8页稀土学报（英文版）

基　　金：Natural Science Foundation of Shaanxi Provincial Department of Education(20JK0486);Natural Science Foundation of Shaanxi Province(2021JQ-799);Graduate Innovation Research Project of Baoji University of Arts and Sciences(YJSCX22YB14)。

摘　　要：In this work,cubic-phased CeO_(2):18 mol%Yb^(3+)/2 moI%Er^(3+)nanospheres were prepared by coprecipitation method,in which the size of nanosphere was precisely controlled by regulating the amount of coprecipitator urea.The morphology evolution of CeO_(2):18%Yb3+/2%Er^(3+)samples that vary from nanosphere to nano-flower with extending the reaction time was elaborately investigated via increasing the amount of urea and increasing the reaction temperature.The influence of non-radiative relaxation(NR)processes and surface quenching on up-conversion emission output of CeO_(2):18%Yb^(3+)/2%Er^(3+)was investigated through varying the sizes and environmental temperatures.Tissue imaging experiment demonstrates that CeO_(2):18%Yb^(3+)/2%Er^(3+)nanospheres have the potential to act as luminescent imaging reagents in tissue imaging.

关 键 词：UP-CONVERSION Non-radiative relaxation Morphology evolution Tissue imaging Rare earths 

分 类 号：TB383.1[一般工业技术—材料科学与工程] R318[医药卫生—生物医学工程]