A step forward toward smart white lighting: Combination of glass phosphor and light emitting diodes

Andrade, L. H. C.; Lima, S. M.; Novatski, A.; Steimacher, A.; Rohling, J. H.; Medina, A. N.; Bento, A. C.; Baesso, M. L.; Guyot, Y.; Boulon, G.
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p081104
Academic Journal
We present our recent achievements of a glass able to produce smart white light combining a glass phosphor with light emitting diodes (LEDs). The combined emissions of Ce3+-doped calcium aluminosilicate glass and the 405 nm LED using the Commission Internationale de l’Éclairage 1931 chromatic diagram showed that this system presents an emission close to the ideal white light and allows tunability. In addition, the glass blue emission overlaps with the spectral range of the retinal photoreceptors involved in circadian responses. This glass combined with UV LED emission is suitable for circadian lights and therefore may contribute to improve environmental lighting and human well being.


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