liu.seSearch for publications in DiVA
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Effect of ion-implantation-induced defects and Mg dopants on the thermoelectric properties of ScN
Linköpings universitet, Institutionen för fysik, kemi och biologi, Tunnfilmsfysik. Linköpings universitet, Tekniska fakulteten.
Univ Poitiers, France.
Univ Poitiers, France.
Tech Univ Denmark, Denmark.
Vise andre og tillknytning
2018 (engelsk)Inngår i: Physical Review B, ISSN 2469-9950, E-ISSN 2469-9969, Vol. 98, nr 20, artikkel-id 205307Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

For applications in energy harvesting and environmentally friendly cooling, and for power sources in remote or portable applications, it is desired to enhance the efficiency of thermoelectric materials. One strategy consists of reducing the thermal conductivity while increasing or retaining the thermoelectric power factor. An approach to achieve this is doping to enhance the Seebeck coefficient and electrical conductivity, while simultaneously introducing defects in the materials to increase phonon scattering. Here, we use Mg ion implantation to induce defects in epitaxial ScN (111) films. The films were implanted with Mg+ ions with different concentration profiles along the thickness of the film, incorporating 0.35 to 2.2 at. % of Mg in ScN. Implantation at high temperature (600 degrees C), with few defects due to the temperature, does not substantially affect the thermal conductivity compared to a reference ScN. Samples implanted at room temperature, in contrast, exhibited a reduction of the thermal conductivity by a factor of 3. The sample doped with 2.2 at. % of Mg also showed an increased power factor after implantation. This paper thus shows the effect of ion-induced defects on thermal conductivity of ScN films. High-temperature implantation allows the defects to be annealed out during implantation, while the defects are retained for room-temperature implanted samples, allowing for a drastic reduction in thermal conductivity.

sted, utgiver, år, opplag, sider
AMER PHYSICAL SOC , 2018. Vol. 98, nr 20, artikkel-id 205307
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-153372DOI: 10.1103/PhysRevB.98.205307ISI: 000451333100009OAI: oai:DiVA.org:liu-153372DiVA, id: diva2:1271823
Merknad

Funding Agencies|European Research Council under the European Community [335383]; Swedish Foundation for Strategic Research through the Future Research Leaders 5 program; Swedish Research Council [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 (SFO-Mat-LiU Faculty Grant) [2009 00971]; DAE-BRNS [37(3)/14/02/2015/BRNS]

Tilgjengelig fra: 2018-12-18 Laget: 2018-12-18 Sist oppdatert: 2019-03-22

Open Access i DiVA

fulltext(2520 kB)202 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 2520 kBChecksum SHA-512
640851084bdb35dfa55b1db5707eace2c0ce345a4e343d90a92db535c2a6f47cd62f589d4703ec656bd307dee1bb62d687440521955f82b35ccd0b206e091457
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Søk i DiVA

Av forfatter/redaktør
Tureson, NinaJensen, JensLu, JunGreczynski, GrzegorzEklund, PerLe Febvrier, Arnaud
Av organisasjonen
I samme tidsskrift
Physical Review B

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 202 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 139 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf