Purple-emitting LEDs Get Closer to the Sun

Seoul Semiconductor Co. Ltd., in partnership with Toshiba Materials Co. Ltd., has created an LED that it says more closely mimics the spectrum of natural daylight. Called SunLike, the LEDs combine Seoul Semiconductor’s high-brightness purple LEDs with advanced red, green, and blue (RGB) phosphors developed at Toshiba Materials. Up to now, most approaches have mimicked daylight by combining blue-emitting LEDs with yellow and red phosphors to fill out the rest of the spectrum, but that method results in peaks in the blue spectrum.