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Hybrid thermal-field emission of ZnO nanowires
University of Rome Tor Vergata.
University of Rome Tor Vergata.
SENSOR Lab, Department of Chemistry and Physics, Brescia University and CNR-IDASC.ORCID-id: 0000-0003-2935-1165
CNR-ISTM.
Vise andre og tillknytning
2011 (engelsk)Inngår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 99, nr 24, artikkel-id 243108Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The electron emission properties of an array of ZnO nanowires were studied in the temperature range of 300-473 K. An almost doubling of the current density at 473 K under an electric field of 8 V/μm (j (T=473 K) = 190 μA/cm 2, j (T=300 K) = 114 μA/cm 2) was observed together with a reduction of the turn-on field from 552 V/μm to 482 V/μm. Theoretical model that combines the thermal-field emission for high electric field and the Schottky emission for the low field can satisfactorily account for temperature dependence of current at low as well as at high applied bias. The obtained effect is particularly appealing for the application in micro-gun for THz vacuum tubes. © 2011 American Institute of Physics.

sted, utgiver, år, opplag, sider
2011. Vol. 99, nr 24, artikkel-id 243108
HSV kategori
Forskningsprogram
Experimentell fysik
Identifikatorer
URN: urn:nbn:se:ltu:diva-10639DOI: 10.1063/1.3670331Scopus ID: 2-s2.0-83755173267Lokal ID: 979012cf-67e0-4e96-8fcd-e762fabb5a9cOAI: oai:DiVA.org:ltu-10639DiVA, id: diva2:983584
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Upprättat; 2011; 20141117 (albvom)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2019-08-16bibliografisk kontrollert

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