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Metal coated silicon spike cold-electron emitters show improvement of performance with operation

Source: Appl. Phys. Lett. 96, 033501 (2010); doi:10.1063/1.3291672

Published 19 January 2010

KEYWORDS and PACS
Keywords
PACS
  • 85.45.Db
    Field emitters and arrays, cold electron emitters
  • 79.70.+q
    Field emission, ionization, evaporation, and desorption
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
E. Spanakis,1,2,3 M. Barberoglou,1,4 V. Zorba,5 P. Tzanetakis,1,4 and C. Fotakis1,4
1Institute of Electronic Structure and Laser, Foundation for Research and Technology–Hellas, P.O. Box 1527, Heraklion GR-71110, Greece
2Department of Materials Science and Technology, University of Crete, Ampelokoipi GR-71003, Heraklion, Greece
3Department of Sciences, Technological Educational Institute of Crete, GR-71004, Heraklion, Greece
4Department of Physics, University of Crete, Vassilika Vouton, GR-71110, Heraklion, Greece
5Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
The short lifetime of all field-emission cathodes in harsh vacuum conditions remains a serious hindrance to an attractive display technology. We studied the evolution in operation of cathodes with spikes, produced by femtosecond-laser self-driven structuring of silicon followed by coating with several different metal films. We observe a very promising behavior with gold and chromium only, opposite to that of all other coatings and of bare Si. This is the improvement in operation of the current-voltage characteristics of the cathode. Potential origins of this effect are briefly outlined. ©2010 American Institute of Physics
History: Received 19 September 2009; accepted 21 December 2009; published 19 January 2010
Permalink: http://link.aip.org/link/?APPLAB/96/033501/1

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