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Keywords:

  • Bi-Te core/shell nanowires;
  • 1D heterostructures;
  • Interface roughness;
  • Thermal conductivity;
  • Thermoelectricity
Thumbnail image of graphical abstract

Phonon scattering is maximized at a rough interface in Bi-Te core/shell structure nanowires, which is simply controlled by a conventional sputtering technique and temperature. On page 3414, Wooyoung Lee and co-workers report that rough interface Bi-Te core/shell nanowires exhibit lower thermal conductivities than those of their smooth interface counterparts, while electrical conductivities for these two types of nanowires are similar.