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Thermoelectric properties of carbon nanotubes layers

TitoloThermoelectric properties of carbon nanotubes layers
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2011
AutoriPenza, Michele, Rossi R., Alvisi Marco, Valerini D., Serra Emanuele, Martinelli E., Di Natale C., and D'Amico A.
RivistaLecture Notes in Electrical Engineering
Volume91 LNEE
Paginazione73-79
ISBN Number9789400713239
ISSN18761100
Parole chiaveCarbon films, Chemical vapor, Chromium, Collins, Energy applications, Linear relationships, Metal contacts, Microsystems, Nanomaterial, Output voltages, Platinum, Pt-electrodes, Radio frequencies, Schottky barrier diodes, Schottky barriers, Silicon substrates, Single-walled, Single-walled carbon nanotubes (SWCN), Temperature sensors, Thermocouples, Thermoelectric power, Thermoelectric properties
Abstract

Thermoelectric power (TEP) of the carbon nanotubes (CNTs) films, grown by radiofrequency plasma-enhanced chemical vapor technology onto silicon substrates, has been measured. Two different metal contacts of Cr-Al and Cr-Au have been fabricated for the CNTs-based thermocouples and preliminarily investigated. The CNTs-based thermocouples exhibit large values of TEP due to the Schottky barriers at semiconducting CNTs-metal junctions. The highest TEP of 40.7 μV/K has been achieved for the thermocouple CNTs/Cr-Al. This value is enhanced of about 2 times compared to single-walled CNTs bundles reported in literature (Collins et al. Science 287:1801-1804, 2000), and comparable to isolated suspended single-walled carbon nanotubes with Pt-electrodes reported in literature (Yu et al. Nano Lett 5(9):1842-1846, 2005) as well. The CNTs-thermocouples exhibit linear relationship for the output voltage versus temperature in the range from 20 to 70°C by providing an interesting nanomaterial for energy applications and temperature and/or radiation microsensors. © 2011 Springer Science+Business Media B.V.

Note

cited By 0; Conference of 15th Italian Conference on Sensors and Microsystems, AISEM 2010 ; Conference Date: 8 February 2010 Through 10 February 2010; Conference Code:86311

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-80052367984&doi=10.1007%2f978-94-007-1324-6_10&partnerID=40&md5=35eca53cd2d08ef71c0f9e6a3b0ab65a
DOI10.1007/978-94-007-1324-6_10
Citation KeyPenza201173