Green and red oxynitride/nitride phosphors have been demonstrated as potential downconversion luminescent materials for white light-emitting diodes (LEDs). In this letter, the authors attempt to fabricate white LEDs by combining and with a blue LED die and report their optical properties. These two phosphors lend themselves for use in 2-phosphor-converted white LEDs with promising properties: a wide range of tunable correlated color temperature , acceptable color rendering index (82–83), and luminous efficacy . These LEDs are acceptable for general lighting.
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© 2007 American Institute of Physics.
2007
American Institute of Physics
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