Title :
The Impact of Light Scattering on the Radiant Flux of Phosphor-Converted High Power White Light-Emitting Diodes
Author :
Sommer, Christian ; Reil, Frank ; Krenn, Joachim R. ; Hartmann, Paul ; Pachler, Peter ; Hoschopf, Hans ; Wenzl, Franz P.
Author_Institution :
Inst. of Surface Technol. & Photonics, Joanneum Res. Forschungsges.mbH, Weiz, Austria
Abstract :
We present an optical ray-tracing study which investigates the influence of the refractive indexes of the matrix and the phosphor materials as well as the phosphor particle sizes of the color conversion elements (CCE) on the radiant flux of phosphor-conversion-based white light-emitting diodes. We show that an appropriate combination of those parameters is a crucial factor in order to optimize device efficacy.
Keywords :
light emitting diodes; light scattering; optimisation; particle size; phosphors; radiative lifetimes; ray tracing; refractive index; color conversion elements; light scattering; optical ray-tracing; optimization; particle size; phosphor-converted high power white light-emitting diodes; radiant flux; refractive index; Color; Light emitting diodes; Materials; Matrix converters; Phosphors; Refractive index; Scattering; Light-emitting diodes; simulation; solid state lighting;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2158987
