Phosphor materials and illumination devices made therefrom
AssigneeInnovalight, Inc.
InventorsPaul Thurk, David Jursberg
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Abstract
This invention provides a phosphor material capable of absorbing primary light and converting that light into white light having a high color rendering index and illumination devices made from the phosphor material. The white light may have a color rendering index of 100 and may be produced with an efficiency of at least 30 lm/w. In one embodiment, the illumination device includes a secondary light source made from a plurality of Group IV semiconductor nanoparticles.
Claims33
A light emitting device comprising:
- (a) a primary light source which emits primary light;
- and
- (b) a phosphor material comprising a plurality of nanoparticles, the nanoparticles comprising a Group IV semiconductor, which absorbs at least a portion of the primary light and emits a secondary light, wherein the secondary light or the combination of the secondary light with the primary light comprises a white light.
A phosphor material comprising a plurality of domains deposited on an organic film, each domain comprising a plurality of luminescent semiconductor nanoparticles having a substantially monodisperse size distribution.
Dependencies are inferred from the claim text.