Method to fabricate combined UV light emitter and phosphor for white light generation
AssigneeSharp Laboratories of America, Inc.
InventorsYoshi Ono, Wei Pan
Life of this patent
Estimating the term…
Abstract
A method of forming carbon nanotubes includes incorporating phosphors in the form of quantum dots, along with the beads of ZnO on carbon nanotubes (CNTs) to generate white light. The ability to form a high density of quantum dots in a small volume allows for a high probability of UV absorption and subsequent re-emission to generate visible radiation. The material and size of the quantum dots can be controlled by an atomic layer deposition (ALD) process and thermal cycle.
Claims9
A method to fabricate a combined UV light emitter and phosphor for white light generation comprising:
- preparing a silicon substrate-electrode;
- growing carbon nanotubes on the silicon substrate-electrode;
- atomic layer deposition of ZnO on the carbon nanotubes;
- annealing the ZnO and carbon nanotubes to produce nanobeads on the ZnO;
- bonding the free ends of the carbon nanotubes to a graphite sheet-electrode, forming a UV light emitter;
- encapsulating the UV light emitter in a housing having a power supply connected to the silicon substrate-electrode and the graphite sheet-electrode.
A method to fabricate a combined UV light emitter and phosphor for white light generation comprising:
- preparing a silicon substrate-electrode;
- growing carbon nanotubes on the silicon substrate-electrode;
- atomic layer deposition of ZnO on the carbon nanotubes;
- atomic layer deposition and annealing of a quantum dot precursor on the carbon nanotubes to facilitate nanobead formation;
- annealing the ZnO and carbon nanotubes to produce nanobeads on the ZnO;
- bonding the free ends of the carbon nanotubes to a graphite sheet-electrode, forming a UV light emitter;
- encapsulating the UV light emitter in a housing having a power supply connected to the silicon substrate-electrode and the graphite sheet-electrode.
Dependencies are inferred from the claim text.