Color tuning of Eu-Tb co-doped borophosphate glasses for white light through valence state adjustment

The dependence of color points of white light on the composition of bomphosphate glasses co-doped with europium （En） and terbium （Tb） has been investigated in terms of valence change of rare earth ions. Under ultraviolet （UV） excitation, the white light is observed to be from a combination of 4f65d...

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Published inOptoelectronics letters Vol. 7; no. 6; pp. 427 - 430
Main Author 徐所成 郑玺 田华 吕天帅 王鹏 王达健
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.11.2011
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
价态
共掺杂
白光
眼镜
硼磷酸盐
颜色调整
Full Width Half Maximum
Glass Composition
Glass Host
Correlate Color Temperature
Blue Emission
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ISSN1673-1905
1993-5013
DOI10.1007/s11801-011-1036-5

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Summary:The dependence of color points of white light on the composition of bomphosphate glasses co-doped with europium （En） and terbium （Tb） has been investigated in terms of valence change of rare earth ions. Under ultraviolet （UV） excitation, the white light is observed to be from a combination of 4f65d → 4f7 band transition emission at 425 nm for Eu^2＋, 5D0 → ^7Fj （J= 1, 2） lineemissions at 593 nm and 611 nm for Eu^3＋, and 5D4 → 7F5 band transition emission at 545 nm for Tb^3＋. By varying the glass composition, the resultant emission color can be tuned efficiently. Eventually, the optimized white light with commission international de I＇Eclairage （CIE） coordinate of （0.3382. 0.2763） and the correlate color temperature （CCT） at 5010 K are achieved.
Bibliography:The dependence of color points of white light on the composition of bomphosphate glasses co-doped with europium （En） and terbium （Tb） has been investigated in terms of valence change of rare earth ions. Under ultraviolet （UV） excitation, the white light is observed to be from a combination of 4f65d → 4f7 band transition emission at 425 nm for Eu^2＋, 5D0 → ^7Fj （J= 1, 2） lineemissions at 593 nm and 611 nm for Eu^3＋, and 5D4 → 7F5 band transition emission at 545 nm for Tb^3＋. By varying the glass composition, the resultant emission color can be tuned efficiently. Eventually, the optimized white light with commission international de I＇Eclairage （CIE） coordinate of （0.3382. 0.2763） and the correlate color temperature （CCT） at 5010 K are achieved.
12-1370/TN
XU Suo-cheng , ZHENG Xi , TIAN Hua , LV Tian-shuai, WANG Peng , WANG Da-jian （1. School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China ;2. Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education of China, Tianjin University of Technology, Tianjin 300384, China ;3. Tianjin Key Laboratory of Photoelectric Materials and Devices, Tianjin University of Technology, Tianjin 300384, China）
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-011-1036-5