Graphene shield enhanced photocathodes and methods for making the same

Moody, Nathan Andrew

Title: Graphene shield enhanced photocathodes and methods for making the same

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Abstract

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.

Inventors:: Moody, Nathan Andrew

Issue Date:: 2014-09-02

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1151826

Patent Number(s):: 8823259

Application Number:: 13/886,517

Assignee:: Los Alamos National Security, LLC (Los Alamos, NM)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
H01J40/06 - Photo-emissive cathodes
H01J1/34 - Photo-emissive cathodes

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DOE Contract Number:: AC52-06NA25396

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

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                    Moody, Nathan Andrew. Graphene shield enhanced photocathodes and methods for making the same.  United States: N. p., 2014. 
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                    Moody, Nathan Andrew. Graphene shield enhanced photocathodes and methods for making the same.  United States.

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                    Moody, Nathan Andrew. Tue .  
        "Graphene shield enhanced photocathodes and methods for making the same".  United States.  https://www.osti.gov/servlets/purl/1151826.

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@article{osti_1151826,

  title        = {Graphene shield enhanced photocathodes and methods for making the same},

  author       = {Moody, Nathan Andrew},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {9}

}

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