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P-type Al-doped Cr-deficient CrN thin films for thermoelectrics
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.
Tech Univ Denmark, Denmark.
Univ Poitiers, France.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.ORCID-id: 0000-0003-1785-0864
2018 (engelsk)Inngår i: APPLIED PHYSICS EXPRESS, ISSN 1882-0778, Vol. 11, nr 5, artikkel-id 051003Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Thermoelectric properties of chromium nitride (CrN)-based films grown on c-plane sapphire by dc reactive magnetron sputtering were investigated. In this work, aluminum doping was introduced in CrN (degenerate n-type semiconductor) by co-deposition. Under the present deposition conditions, over-stoichiometry in nitrogen (CrN1+delta) rock-salt structure is obtained. A p-type conduction is observed with nitrogen-rich CrN combined with aluminum doping. The Cr0.96Al0.04N1.17 film exhibited a high Seebeck coefficient and a sufficient power factor at 300 degrees C. These results are a starting point for designing p-type/n-type thermoelectric materials based on chromium nitride films, which are cheap and routinely grown on the industrial scale. (C) 2018 The Japan Society of Applied Physics

sted, utgiver, år, opplag, sider
IOP PUBLISHING LTD , 2018. Vol. 11, nr 5, artikkel-id 051003
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Identifikatorer
URN: urn:nbn:se:liu:diva-147785DOI: 10.7567/APEX.11.051003ISI: 000430588900001OAI: oai:DiVA.org:liu-147785DiVA, id: diva2:1206503
Merknad

Funding Agencies|European Research Council under the European Communitys Seventh Framework Programme (FP)/ERC [335383]; Swedish Foundation for Strategic Research (SSF) through the Future Research Leaders 5 program; Swedish Research Council (VR) [621-2012-4430, 2016-03365]; Knut and Alice Wallenberg Foundation through the Wallenberg Academy Fellows program; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; M.ERA-NET project MC2 - French ANR program [ANR-13-MERA-0002-02]; CTEC project [1305-00002B]

Tilgjengelig fra: 2018-05-17 Laget: 2018-05-17 Sist oppdatert: 2018-06-05

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