Method to fabricate combined UV light emitter and phosphor...

Details Method to fabricate combined UV light emitter and phosphor... Method to fabricate combined UV light emitter and phosphor...

2006-10-27

2008-10-28

Vu, David (Department: 2818)

Semiconductor device manufacturing: process

Making device or circuit emissive of nonelectrical signal

Making emissive array

C977S847000

Reexamination Certificate

active

07442568

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.

REFERENCES:
patent: 2007/0099441 (2007-05-01), Conley et al.
patent: 2007/0264478 (2007-11-01), Liao et al.
J.M. Green et al, “ZnO nanoparticle coated carbon nanotubes demonstrating enhanced electron field-emission properties”, May 12, 2006, Journal of Applied Physics, vol. 99, pp. 094308-1-094308-4.
U.S. Appl. No. 11/262,439, filed Oct. 28, 2005, Conley et al.
Zhong et al.,Morphological evolution of metal nanoparticles on surfaces of carbon nanotubes, Appl. Phys. Lett. 87, 133105 (2005).

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