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Proceedings Paper

Color tunable green-yellow-orange-red erbium/europium codoped fluorolead germanate glass phosphor for application in LED illumination technology
Author(s): Artur S. Gouveia-Neto; Wellington S. Souza; Renata O. Domingues; Ernande B. da Costa; Luciano A. Bueno
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Paper Abstract

Color tunable wide gamut light covering the greenish, yellow-green, yellow, orange, and reddish tone chromaticity region in europium/erbium co-doped lead-cadmium-germanate PbGeO3:PbF2:CdF2 glass phosphor is presented. The phosphors were synthesized, and their light emission properties examined under UV/blue light-emitting-diode excitation. Luminescence emission around 525, 550, 590, 610, and 660 nm was obtained and analyzed as a function of Eu/Er concentration, excitation wavelength, and glass host composition. The color tunability was actually obtained via proper combination of Er3+ and Eu3+ active ions concentration. The combination of the emission tone with a blue LED in the region of 400-460 nm, yields a mixture of light with color in the white-light region presenting a CCT in the range of 2000 to 4000 K. Results indicate that the color-tunable fluorolead germanate erbium/europium co-doped glass phosphor herein reported is a promising novel contender for application in LED-based solid-state illumination technology

Paper Details

Date Published: 4 March 2013
PDF: 8 pages
Proc. SPIE 8641, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVII, 86411E (4 March 2013); doi: 10.1117/12.2001118
Show Author Affiliations
Artur S. Gouveia-Neto, Univ. Federal Rural de Pernambuco (Brazil)
Wellington S. Souza, Univ. Federal Rural de Pernambuco (Brazil)
Renata O. Domingues, Univ. Federal Rural de Pernambuco (Brazil)
Ernande B. da Costa, Univ. Federal Rural de Pernambuco (Brazil)
Luciano A. Bueno, Univ. Federal Rural de Pernambuco (Brazil)

Published in SPIE Proceedings Vol. 8641:
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVII
Klaus P. Streubel; Heonsu Jeon; Li-Wei Tu; Martin Strassburg, Editor(s)

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