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

摘要

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.

主权项

1. A light emitting device, comprising:
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, the recipient luminophoric medium including at least:
a first broad-spectrum luminescent material that down-converts a first portion of the radiation emitted by the LED to radiation having a peak wavelength in the red color range; anda first narrow-spectrum luminescent material that down-converts a second portion of the radiation emitted by the LED to radiation having a peak wavelength in the red color range.