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Proceedings Paper

Carbidonitride- and oxycarbidonitride-based phosphors for LED lighting devices
Author(s): Yuanqiang Li; Michael Romanelli; Yongchi Tian
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Paper Abstract

Based on an analysis on the chemical bonding energy of a luminescence center and the thermal stability of luminescence emission, we describe a design idea of high performance phosphor materials. It is to incorporate a superhard chemical bond, Si-C, into the host crystals. Two families of phosphor formulations are designed and prepared through high temperature solid state reaction. The structure determination results of the phosphors demonstrated the incorporation of the Si-C bonds in the crystal. The effect of the Si-C bond in the formulations is evident on luminescence and optical spectra. The thermal quenching profiles of the phosphors show enhanced thermal stability of the luminescence emission as the carbon content is increased.

Paper Details

Date Published: 27 February 2012
PDF: 7 pages
Proc. SPIE 8262, Gallium Nitride Materials and Devices VII, 82621O (27 February 2012); doi: 10.1117/12.906847
Show Author Affiliations
Yuanqiang Li, Lightscape Materials, Inc. (United States)
Michael Romanelli, Lightscape Materials, Inc. (United States)
Yongchi Tian, Lightscape Materials, Inc. (United States)

Published in SPIE Proceedings Vol. 8262:
Gallium Nitride Materials and Devices VII
Jen-Inn Chyi; Yasushi Nanishi; Hadis Morkoç; Joachim Piprek; Euijoon Yoon, Editor(s)

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