Luminescent properties of Dy3+/Eu3+ doped fluorescent glass for white LED based on oxyfluoride matrix
来源期刊：JOURNAL OF RARE EARTHS2021年第1期
论文作者：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 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.
Jingxi An1，Shuang Zhang1，Ruiwang Liu1，Guangxu Hu1，Zhiwei Zhang1，Yiyu Qiu1，Yanyan Zhou1，Fanming Zeng1，Zhongmin Su1,2
1. School of Material Science and Engineering,Changchun University of Science and Technology
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.
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