Recipient luminophoric mediums having narrow spectrum luminescent materials and related semiconductor light emitting devices and methods

Patent · Tue Dec 30 04:00:00 EST 2014

OSTI ID:1166752

LeToquin, Ronan P; Tong, Tao; Glass, Robert C

Light emitting devices include a light emitting diode ("LED") and a recipient luminophoric medium that is configured to down-convert at least some of the light emitted by the LED. In some embodiments, the recipient luminophoric medium includes a first broad-spectrum luminescent material and a narrow-spectrum luminescent material. The broad-spectrum luminescent material may down-convert radiation emitted by the LED to radiation having a peak wavelength in the red color range. The narrow-spectrum luminescent material may also down-convert radiation emitted by the LED into the cyan, green or red color range.

• Research Organization: Cree, Inc., Durham, NC (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-08NT01577
• Assignee: Cree, Inc. (Durham, NC)
• Patent Number(s): 8,921,875
• Application Number: 13/104,238
• OSTI ID: 1166752
• Country of Publication: United States
• Language: English

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