The phosphor´s optical properties — White light quality relationship of white LEDs

Author

Sommer, C. ; Hartmann, P. ; Pachler, P. ; Hoschopf, H. ; Wenzl, F.P.

Author_Institution

Inst. of Surface Technol. & Photonics, Joanneum Res. Forschungsgesellschaft mbH, Weiz, Austria

fYear

2011

Firstpage

53

Lastpage

54

Abstract

Based on optical ray-tracing simulations we discuss the effect of the extinction coefficient and the quantum efficiency of the phosphors on the color temperature and the angular homogeneity of the white light emitted from phosphor converted light-emitting diodes. The individual absorption profiles of the blue LED light and the related radiative loss mechanisms turn out to have a tremendous impact on the white light quality of the respective white LED sources.

Keywords

extinction coefficients; light emitting diodes; optical losses; phosphors; ray tracing; visible spectra; absorption profiles; angular homogeneity; blue LED light; color temperature; extinction coefficient; light-emitting diodes; optical ray-tracing simulations; phosphor optical properties; quantum efficiency; radiative loss; white LED source; white light quality; Color; Detectors; Extinction coefficients; Light emitting diodes; Materials; Phosphors; Photonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2011 11th International Conference on

Conference_Location

Rome

ISSN

2158-3234

Print_ISBN

978-1-61284-876-1

Electronic_ISBN

2158-3234

Type

conf

DOI

10.1109/NUSOD.2011.6041133

Filename

6041133