Quantum dot phosphors for solid-state lighting devices

Details Quantum dot phosphors for solid-state lighting devices Quantum dot phosphors for solid-state lighting devices

2009-07-14

2011-10-04

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S501000

Reexamination Certificate

active

08030843

ABSTRACT:
A phosphor for use, for example, with an ultraviolet LED to provide a broad-spectrum white light approximating diffuse sunlight, that includes quantum dots spaced from an activator material by a capping layer surrounding the quantum dots. This approach of spacing an activator material from the quantum dots provides improved spectral output for quantum dots of materials such as zinc sulfide.

REFERENCES:
patent: 2006/0221021 (2006-10-01), Hajjar et al.
patent: 2007/0103068 (2007-05-01), Bawendi et al.
patent: 2007/0170418 (2007-07-01), Bowers et al.

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