The effect of side substitution and quantum interference on the performance of molecular thermoelectric devices: a brief review

Abstract

In recent years, researchers have shown great interest in organic thermoelectric materials that are economical, efficient, lightweight, and environmentally friendly. With advancements in experimental measurement techniques and theoretical calculations, investigations of the thermoelectric properties of molecular devices have become feasible. To regulate the thermoelectric properties of molecular devices, many strategies have been proposed. In this work, we review the theoretical analytical and experimental research methods used to study these properties. We then focus on two tuning strategies, side substitution, and quantum interface effects, which have demonstrated significant improvements in the thermoelectric performance of molecular devices. Finally, we discuss the challenges faced in experimental and theoretical studies and the future prospects of molecular thermoelectric devices.

Keywords: Seebeck effect; conversion efficiency; figure-of-merit; molecular devices; quantum interference; side substitution; thermoelectric effect.