Composite Engineering Facilitates High-Performance CuSe-GeTe Thermoelectrics.

CuSe has emerged as a promising thermoelectric material due to its low lattice thermal conductivity, high Seebeck coefficient, and high peak figure of merit () at elevated temperatures. However, its performance is limited by a high intrinsic carrier concentration and low carrier mobility. In this work, we investigate CuSe-based composites to overcome these challenges by introducing GeTe as compound phase to optimize carrier concentration, enhance mobility, and promote phonon scattering.

CdSe Quantum Dots Enable High Thermoelectric Performance in Solution-Processed Polycrystalline SnSe.

Here, a high peak ZT of ≈2.0 is reported in solution-processed polycrystalline Ge and Cd codoped SnSe. Microstructural characterization reveals that CdSe quantum dots are successfully introduced by solution process method.