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

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.

发文机构：School of Material Science and Engineering Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry

关键词：OxyfluorideglassY/BintensityratioEnergytransferCorrelationcolortemperatureRareearths

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]