3D Bi<sub>2</sub>Te<sub>3</sub> Interconnected Nanowire Networks to Increase Thermoelectric Efficiency
Alejandra Ruiz‐Clavijo, Olga Caballero‐Calero, Cristina V. Manzano, Xavier Maeder, Albert Beardo, Xavier Cartoixà, F. X. Álvarez, Marisol Martín‐González
Abstract
is modeled using the hydrodynamic heat transport equation, and it can be understood as a heat viscosity effect due to the 3D nanostructuration. In addition, the Seebeck coefficient is twice that of nanowires and films, and up to 50% higher than in a single crystal. This increase is interpreted as a nonequilibrium effect that the geometry of the structure induces on the distribution function of the phonons, producing an enhanced phonon drag. These thermoelectric metamaterials have higher performance and are fabricated with large areas by a cost-effective method, which makes them suitable for up-scale production.