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Proceedings Paper

Advanced phosphors for LED applications
Author(s): Holger Winkler; Holger Enderle; Clemens Kuehn; Ralf Petry; Tim Vosgroene
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Paper Abstract

In this paper we give a summary of technologies that are essential for phosphor developing: Characterization of the pure phosphor powders with methods like powder X-ray diffraction (XRD), optical spectroscopy, scanning electron microscopy (SEM), etc. give strong hints for and how to improve the phosphor's performance. The final proof of the phosphor's quality is obtained by application testing in the LED. Latter is a very useful tool for materials researchers and developers to adopt the phosphor to the LED device. Last but not least we demonstrate advantages of a phosphor fabrication process by using wet chemical routes in comparison to the traditional and widely applied solid state diffusion methods ("mix & fire").

Paper Details

Date Published: 28 September 2007
PDF: 12 pages
Proc. SPIE 6797, Manufacturing LEDs for Lighting and Displays, 67970A (28 September 2007); doi: 10.1117/12.761291
Show Author Affiliations
Holger Winkler, MERCK KGaA (Germany)
Holger Enderle, MERCK KGaA (Germany)
Clemens Kuehn, MERCK KGaA (Germany)
Ralf Petry, MERCK KGaA (Germany)
Tim Vosgroene, MERCK KGaA (Germany)

Published in SPIE Proceedings Vol. 6797:
Manufacturing LEDs for Lighting and Displays
Thomas P. Pearsall, Editor(s)

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