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Thermionic current densities from first principles
DOI:10.1063/1.4805002.png)
Abstract
En 中文
We present a density functional theory-based method for calculating thermionic emission currents from a cathode into vacuum using a non-equilibrium Green's function approach. It does not require semi-classical approximations or crude simplifications of the electronic structure used in previous methods and thus provides quantitative predictions of thermionic emission for adsorbate-coated surfaces. The obtained results match well with experimental measurements of temperature-dependent current densities. Our approach can thus enable computational design of composite electrode materials. (C) 2013 AIP Publishing LLC.
Keywords:
FIELD-EMISSION CURRENTS
WORK-FUNCTIONS
TUNGSTEN
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Journal
IF:
3.1
Papers:
7.2W
Citations:
23.2W
Organization
Cited Papers
Calculation of the field-emission current from a surface using the Bardeen transfer Hamiltonian method
PHYSICAL REVIEW B
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Density-functional method for nonequilibrium electron transport -: art. no. 165401
PHYSICAL REVIEW B
IF3.7

