Luminescent properties of Dy3+/Eu3+ 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
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: SPECTROSCOPY,LUMINESCENCE AND PHOSPHORS
• 页码范围: 26-32
• 页数: 7页
• 语种: 英文

摘要

Rare earth ion-doped fluorescent glass has become a hotspot due to its characteristics.This work shows that the prepared Dy3+ and Dy3+/Eu3+ 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 (Dy3+).The correlated color temperature (CCT) can be effectively reduced by the red light emission of Eu3+,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 Dy3+ to Eu3+.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.