NARROW SPECTRAL LINE-WIDTH EMISSION PHOSPHORS WITH BROAD BAND EXCITATION EDGE UP TO AND INCLUDING THE BLUE WAVELENGTH REGION

Rensselaer researchers have developed a new class of phosphors that have narrow spectral linewidths suitable for high-efficiency, white light LED fabrication for lighting and display applications. These phosphors can be efficiently excited by near UV and blue LEDs such as in 400 nm LEDs and can provide emission in green, yellow, amber and red wavelengths. Commercial phosphor-converted white LEDs lack narrow-emitting red phosphors that are effectively excited by blue or near ultraviolet LEDs.