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White Light-Emitting Diode Lamps Using Oxynitride and Nitride Phosphor Materials
Ken SAKUMA Naoto HIROSAKI Naoki KIMURA Masakazu OHASHI Rong-Jun XIE Yoshinobu YAMAMOTO Takayuki SUEHIRO Kenichiro ASANO Daiichiro TANAKA
IEICE TRANSACTIONS on Electronics
Publication Date: 2005/11/01
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
light-emitting diode, phosphor, nitride, illumination,
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White-light emitting diode lamps for general illumination can be realized by a combination of a blue light-emitting diode semiconductor die and phosphors. Newly developed oxynitride and nitride phosphors are promising candidates for this application because they have suitable excitation and emission wavelengths and stable optical properties in a high temperature environment. High brightness warm-white LED lamps have been realized using a yellowish-orange α-SiAlON oxynitride phosphor. High color-rendering index white LED lamps have been also realized using three color oxynitride/nitride phosphors.