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

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.
Authors:
; ; ; ; ; ; ;  [1]
  1. Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart (Germany)
Publication Date:
OSTI Identifier:
22499233
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 3; Journal Issue: 7; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRODES; ELECTRONIC EQUIPMENT; ELECTRONS; GRAPHENE; OPACITY