Material design and luminescent properties of oxynitride phosphor

Abstract

Recent developments in materials design, luminescence and applications of silicon-based oxynitride phosphors, or sialons, are reviewed. The structures of crosslinking (Si,Al)-(O,N)₄ tetradedra in oxynitride phosphors increase the covalent properteis, and have an excitation band of visible-light range. The structural versatility of oxynitride phosphors makes it possible to attain the emission colors of blue, green, yellow, and red; thus they are suitable for use in white LEDs.