28 September 2007 Advanced phosphors for LED applications
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Proceedings Volume 6797, Manufacturing LEDs for Lighting and Displays; 67970A (2007); doi: 10.1117/12.761291
Event: Manufacturing LEDs for Lighting and Display, 2007, Berlin, Germany
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").
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Holger Winkler, Holger Enderle, Clemens Kuehn, Ralf Petry, Tim Vosgroene, "Advanced phosphors for LED applications", Proc. SPIE 6797, Manufacturing LEDs for Lighting and Displays, 67970A (28 September 2007); doi: 10.1117/12.761291; https://doi.org/10.1117/12.761291
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KEYWORDS
Light emitting diodes

Crystals

Quantum efficiency

Particles

Chemical reactions

Luminescence

Cerium

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