Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Regulation of the Crystal Structure Leading to the Bandgap Widening and Phonon Scattering Increasing in Cu3SnS4‐Cu3SbSe3 Chalcogenides

MPG-Autoren
/persons/resource/persons206881

Wang,  Haiyuan
NOMAD, Fritz Haber Institute, Max Planck Society;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (beschränkter Zugriff)
Für Ihren IP-Bereich sind aktuell keine Volltexte freigegeben.
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PuRe verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Zhao, L., Lin, N., Han, Z., Li, X., Wang, H., & Cui, J. (2019). Regulation of the Crystal Structure Leading to the Bandgap Widening and Phonon Scattering Increasing in Cu3SnS4‐Cu3SbSe3 Chalcogenides. Advanced Electronic Materials, 5(10): 1900485. doi:10.1002/aelm.201900485.


Zitierlink: https://hdl.handle.net/21.11116/0000-0004-8645-7
Zusammenfassung
Cu3SnS4 chalcogenide as a low‐cost, earth abundant thermoelectric material has recently attracted much attention. However, its Seebeck coefficient is rather low due to its metallic‐like behavior; therefore, substantial work is required to enhance its thermoelectric (TE) properties. In this work, an alternative method is proposed, that is, a regulation of the crystal structure through alloying with Cu3SbSe3. This regulation is realized by the incorporation of Sb and Se in the Cu3SnS4 host frame with an addition of Cu3SbSe3, thus altering the bond lengths (Cu-S and Sn-S) and bond angles (S-Cu-S and S-Sn-S), and leading to widening of the bandgap and the convergence of top valence bands. At the same time, the lattice thermal conductivity reduces by ≈50% at high temperatures, mainly triggered by the crystal structure distortion and introduced point defects. The approach of crystal structure regulation may help design the properties of other ternary Cu-Sn(Sb)-S(Se) compounds for TE applications.