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Tunable colors and applications of Dy 3+ /Eu 3+ co‐doped CaO‐B 2 O 3 ‐SiO 2 glasses
Author(s) -
Zhou Wenli,
Wang Guanhua,
Zheng Xingxing,
Yu Liping,
Zhang Jilin,
Qiu Zhongxian,
Lian Shixun
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16442
Subject(s) - borosilicate glass , doping , materials science , luminescence , analytical chemistry (journal) , dysprosium , ion , thermal stability , emission spectrum , mineralogy , spectral line , chemistry , optoelectronics , inorganic chemistry , metallurgy , physics , organic chemistry , chromatography , astronomy
A series of Dy 3+ /Eu 3+ single‐ and co‐doped calcium borosilicate luminescent glasses were prepared by the conventional high temperature melt‐quenching method. A compact glass structure is obtained by the addition of Dy 3+ /Eu 3+ ions, which is verified by the physical properties of synthetic glasses. As network modifiers, Dy 3+ /Eu 3+ fill in the interspaces of glass network and contribute to the conversion of [BO 3 ] to [BO 4 ]. Dy 3+ /Eu 3+ co‐doped calcium borosilicate glasses can emit white light, which consists of blue, yellow, and red light under 387 nm excitation. The emission spectra and decay curves of the white‐emitting glasses have proved the existence of energy transfer. The average lifetime of Dy 3+ decreases from 0.251 to 0.165 ms with the increasing Eu 3+ concentration. Changing rare earth ions concentration, CIE color coordinates of Dy 3+ /Eu 3+ co‐doped glass shifts from cyan to white with increasing excitation wavelength. A white‐light emission is obtained when the concentration of Dy 3+ and Eu 3+ equals to 4% and 2%, respectively. Moreover, the Dy 3+ /Eu 3+ co‐doped calcium borosilicate glass shows high‐thermal stability and it may be applicable for high‐quality white LEDs based on high power near ultraviolet (n‐UV) LED chip in the future.