Graphene shield enhanced photocathodes and methods for making the same
Patent
·
OSTI ID:1151826
Disclosed are graphene shield enhanced photocathodes, such as high QE photocathodes. In certain embodiments, a monolayer graphene shield membrane ruggedizes a high quantum efficiency photoemission electron source by protecting a photosensitive film of the photocathode, extending operational lifetime and simplifying its integration in practical electron sources. In certain embodiments of the disclosed graphene shield enhanced photocathodes, the graphene serves as a transparent shield that does not inhibit photon or electron transmission but isolates the photosensitive film of the photocathode from reactive gas species, preventing contamination and yielding longer lifetime.
- Research Organization:
- LANL (Los Alamos National Laboratory (LANL), Los Alamos, NM (United States))
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC52-06NA25396
- Assignee:
- Los Alamos National Security, LLC (Los Alamos, NM)
- Patent Number(s):
- 8,823,259
- Application Number:
- 13/886,517
- OSTI ID:
- 1151826
- Country of Publication:
- United States
- Language:
- English
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