White light-emitting diode with quasisolar spectrum based on organic fluorescent dyes

Abstract

© 2015 Society of Photo-Optical Instrumentation Engineers (SPIE). We present a study of light-emitting diodes (LEDs) using organic fluorescent dyes to replace the general phosphor. The blue die with a specific organic fluorescent dye gives the LED a single color appearance. Through a color-mixing cavity, multiple LEDs are used to produce a quasisolar spectrum at a certain band and white light with a color rendering index as high as 97 at around 2800 K.