Transparency of graphene for low-energy electrons measured in a vacuum-triode setup | Zendy

G.W.J. Hassink | Zendy; R. Wanke | Zendy; I. Rastegar | Zendy; Wolfgang Braun | Zendy; Cyril Stephanos | Zendy; Patrick Herlinger | Zendy; J. H. Smet | Zendy; J. Mannhart | Zendy

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Transparency of graphene for low-energy electrons measured in a vacuum-triode setup

Author(s) -

G.W.J. Hassink,

R. Wanke,

I. Rastegar,

Wolfgang Braun,

Cyril Stephanos,

Patrick Herlinger,

J. H. Smet,

J. Mannhart

Publication year - 2015

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4927406

Subject(s) - triode , graphene , materials science , ambipolar diffusion , electron , optoelectronics , electrode , vacuum level , ultra high vacuum , nanotechnology , electrical engineering , physics , capacitor , voltage , engineering , quantum mechanics

Graphene, being an atomically thin conducting sheet, is a candidate material for gate electrodes in vacuum electronic devices, as it may be traversed by low-energy electrons. The transparency of graphene to electrons with energies between 2 and 40 eV has been measured by using an optimized vacuum-triode setup. The measured graphene transparency equals ∼60% in most of this energy range. Based on these results, nano-patterned sheets of graphene or of related two-dimensional materials are proposed as gate electrodes for ambipolar vacuum devices

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