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Carbon cage-like materials as potential low work function metallic compounds : Case of clathrates

Timoshevskii, Vladimir and Connétable, Damien and Blase, Xavier Carbon cage-like materials as potential low work function metallic compounds : Case of clathrates. (2002) Applied Physics Letters, vol. 80 (n° 8). pp. 1385-1387. ISSN 0003-6951

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Official URL: http://dx.doi.org/10.1063/1.1453481

Abstract

We present an ab initio calculation of the electronic affinity of the hypothetical C-46 clathrate by studying its bare and hydrogenated (100) surfaces. We show that such a system shares with the diamond phase a small electronic affinity. Furthermore, contrary to the diamond phase, the possibility of endohedrally doping these cage-like systems allows to significantly raise the position of the Fermi level, resulting in a true metal with a small work function. This is illustrated in the case of the Li-8 @ C-46 doped compound. Such a class of materials might be of much interest for the design of electron-emitting devices. (C) 2002 American Institute of Physics.

Item Type:Article
Additional Information:Thanks to American Institute of Physics editor. The definitive version is available at http://www.aip.org/aip/ The original PDF of the article can be found at Applied Physics Letters website : http://apl.aip.org/resource/1/applab/v80/i8/p1385_s1
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université Claude Bernard-Lyon I - UCBL (FRANCE)
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Deposited By: Damien CONNETABLE

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