Luminescent properties of Dy^3+/Eu^3+ doped fluorescent glass for white LED based on oxyfluoride matrix  

作　　者：Jingxi An Shuang Zhang Ruiwang Liu Guangxu Hu Zhiwei Zhang Yiyu Qiu Yanyan Zhou Fanming Zeng Zhongmin Su 

机构地区：[1]School of Material Science and Engineering,Changchun University of Science and Technology,Changchun 130022,China [2]Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry,Changchun 130022,China

出　　处：《Journal of Rare Earths》2021年第1期26-32,I0002,共8页稀土学报（英文版）

基　　金：Project supported by Science and Technology Department of Jilin Province of China(20190302006GX);Technology Innovation Fund of Changchun University of Science and Technology(XJJLG-2017-06,XJJLG-2018-10)。

摘　　要：Rare earth ion-doped fluorescent glass has become a hotspot due to its characteristics.This work shows that the prepared Dy^3+and Dy^3+/Eu^3+doped glasses have white light emission under ultraviolet excitation.There is a higher yellow light/blue light(Y/B)value,indicating an increase in the covalentity of Dy-O,and decrease in the symmetry with the increasing concentration of dopants(Dy^3+).The correlated color temperature(CCT)can be effectively reduced by the red light emission of Eu^3+,and the order of influence of excitation wavelength on CCT is 395 nm>382 nm>365 nm.The delay curve demonstrates the energy transfer from Dy^3+to Eu^3+.The glass has the characteristics of anti-blue light damage and wide tunable color temperature,which illustrates that it has potential application in the field of white LED.

关 键 词：Oxyfluoride glass Y/B intensity ratio Energy transfer Correlation color temperature Rare earths 

分 类 号：TM923.34[电气工程—电力电子与电力传动] TQ171.73[化学工程—玻璃工业]