Silicate phosphors for white LEDs identified through combinatorial chemistry

In order to develop red, green, blue phosphors that emit efficiently under the 380-410 nm excitation range, combinatorial chemistry was used based on silicate materials. We attempted to develop white UV light emitting diodes (LEDs) by combining them with an InGaN LED chip (405nm). Quaternary and ternary combinatorial libraries were developed to synthesize, process, and screen for silicate materials. Our combinatorial chemistry system consists of solution-based combinatorial synthesis and characterization, enabling the swift scanning of luminance. As a consequence of the combinatorial approach, several red, green, and blue candidates were found to show high luminance under the 380-410 nm excitation range. (c) 2006 The Electrochemical Society.