Patent ID: 7446343
Filing Date: 2008-11-04
Classification: C04B,C09K

Abstract:
1. A device comprising: a semiconductor structure comprising a light emitting layer disposed between an n-type region and a p-type region, the light emitting layer being configured to emit light having a first peak wavelength; a first phosphor disposed in a path of light emitted by the light emitting layer, the first phosphor being configured to emit light having a second peak wavelength; and a second phosphor disposed in a path of light emitted by the light emitting layer, the second phosphor being configured to emit light having a third peak wavelength, wherein: the second phosphor comprises Eu in the excitation spectrum of the second phosphor at 298K and 1.013 bar, a maximum intensity in a wavelength range between 460 nm and 470 nm is at least 5% of a maximum intensity in a wavelength range between 220 nm to 320 nm.