White LEDs Approximate Daylight
In pursuit of alternative material systems for white LEDs, scientists at National Institute for Materials Science in Tsukuba, at Sharp Corp. in Mihara and at Fujikura Ltd. in Sakura, all in Japan, are investigating phosphors of α-SiAlON containing lithium and doped with Eu2+ for use with 460-nm InGaN LEDs. They suggest that the warm white emitters point the way to a substitute to white LEDs based on the YAG:Ce3+ phosphor for applications such as LCD backlights, flashlights and automotive...
Photonics Spectra, June 2006