Novel samarium/erbium and samarium/terbium codoped glass phosphor for application in warm white light-emitting-diode

Cosmo M. da Silva Jr.; Artur S. Gouveia-Neto; Luciano A. Bueno

doi:10.1117/12.2036372

27 February 2014 Novel samarium/erbium and samarium/terbium codoped glass phosphor for application in warm white light-emitting-diode

Cosmo M. da Silva Jr., Artur S. Gouveia-Neto, Luciano A. Bueno

Author Affiliations +

Proceedings Volume 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII; 90031G (2014) https://doi.org/10.1117/12.2036372
Event: SPIE OPTO, 2014, San Francisco, California, United States

Abstract

Tunable polychromatic light emission within the low color correlated temperature range was produced using terbiumand/ or erbium-samarium co-doped PbGeO₃:PbF₂:CdF₂ glass phosphor. The phosphors were synthesized, and their luminescence characteristics were examined under UV-blue light-emitting-diode laser excitation. Luminescence emission around 490, 545, 600, and 645 nm in Tb³⁺/Sm³⁺ and 525, 545, 600, and 645 nm in Er³⁺/Sm³⁺ co-doped phosphor was obtained and analyzed as a function of the active ions concentration, and excitation wavelength. Color tunability in the red-orange-yellow-green region was achieved combining of Tb³⁺, Er³⁺, and Sm³⁺ ions contents. Results suggest that the color-tunable polychromatic light emitter phosphor herein reported is a promising novel candidate for application in cold white-light LED-based illumination technology

Citation Download Citation

Cosmo M. da Silva Jr., Artur S. Gouveia-Neto, and Luciano A. Bueno "Novel samarium/erbium and samarium/terbium codoped glass phosphor for application in warm white light-emitting-diode", Proc. SPIE 9003, Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XVIII, 90031G (27 February 2014); https://doi.org/10.1117/12.2036372

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