Pr3+/Ho3+ co-doped glass phosphors for application in warm white light-emitting diodes

Pr3+/Ho3+ co-doped fluorozirconate glasses were prepared and their luminescence properties studied. Blue, green and red luminescence in the wavelength region of 470–750nm were achieved in these glasses under 443nm light-emitting diode (LED) excitation. The ratio of Pr3+–Ho3+ was changed in order to...

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Bibliographic Details
Published in:Materials letters 2016-03, Vol.167, p.1-3
Main Authors: Zhang, Yu, Huang, Feifei, liu, Liwan, Liu, Xueqiang, Zheng, Shupei, Chen, Danping
Format: Article
Language:English
Subjects:
Adjustment
Color temperature
Fluorozirconate glass
Glass
Light-emitting diodes
Luminescence
Phosphors
Visible luminescence
Wavelengths
White light
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Summary:Pr3+/Ho3+ co-doped fluorozirconate glasses were prepared and their luminescence properties studied. Blue, green and red luminescence in the wavelength region of 470–750nm were achieved in these glasses under 443nm light-emitting diode (LED) excitation. The ratio of Pr3+–Ho3+ was changed in order to determine the appropriate combination for realizing color-controlled white LEDs. The color temperature of the white light can be adjusted by changing the LED-excitation wavelength or the ratio of the Ho3+/Pr3+ ions. Thus, Pr3+/Ho3+co-doped fluorozirconate glasses are potential materials for use in white LEDs. •Color-controlled white LED was achieved from Pr3+/Ho3+ fluorozirconate glasses.•The chromaticity coordinate of P1H1 fluorescent glass is (0.3266 and 0.3499).•The synthesized white color temperature can be adjusted by adjusting the ratio of Pr3+/Ho3+.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2015.12.136