Enhanced thermoelectric performance by resonant vibrational mode-selective density-of-states distortions

Abstract

As the number of photons (Nph) is increased to augment the coupling of IR light to C–C stretching vibrations, a resonant four-step process is shown to improve power factor by maximizing asymmetries in the tail distribution of conducting carriers.

Realizing high in-plane carrier mobility in n-type SnSe crystals through deformation potential modification

“…Thus, decoupling these parameters is the core issue for thermoelectric research. During the last twenty years, various strategies have been proposed to realize electron-phonon decoupling, such as band convergence, 10,11 symmetry manipulation, 12,13 resonant levels, [14][15][16] all-scale hierarchical architectures, [17][18][19] and intrinsic low thermal conductivity. 20,21 As a commercial thermoelectric material, Bi 2 Te 3 is limited by its scarce and high-cost raw materials.…”