Correction: The importance of phase equilibrium for doping efficiency: iodine doped PbTe.

Correction for 'The importance of phase equilibrium for doping efficiency: iodine doped PbTe' by James Male , , 2019, , 1444-1453, DOI: 10.1039/C9MH00294D.

The Thermoelectric Properties of -Type Bismuth Telluride: Bismuth Selenide Alloys BiTe Se .

Alloying bismuth telluride with antimony telluride and bismuth selenide for - and -type materials, respectively, improves the thermoelectric quality factor for use in room temperature modules. As the electronic and thermal transports can vary substantially, the alloy composition is a key engineering parameter. The -type BiTe Se alloy lags its -type counterpart in thermoelectric performance and does not lend itself as readily to simple transport modeling which complicates engineering.

3D extruded composite thermoelectric threads for flexible energy harvesting.

Whereas the rigid nature of standard thermoelectrics limits their use, flexible thermoelectric platforms can find much broader applications, for example, in low-power, wearable energy harvesting for internet-of-things applications. Here we realize continuous, flexible thermoelectric threads via a rapid extrusion of 3D-printable composite inks (BiTe n- or p-type micrograins within a non-conducting polymer as a binder) followed by compression through a roller-pair, and we demonstrate their applications in flexible, low-power energy harvesting. The thermoelectric power factors of these threads are enhanced up to 7 orders-of-magnitude after lateral compression, principally due to improved conductivity resulting from reduced void volume fraction and partial alignment of thermoelectric micrograins.

The importance of phase equilibrium for doping efficiency: iodine doped PbTe.

Semiconductor engineering relies heavily on doping efficiency and dopability. Low doping efficiency may cause low mobility and failure to reach target carrier concentrations or even the desired carrier type. Semiconducting thermoelectric materials perform best with degenerate carrier concentrations, meaning high performance in new materials might not be realized experimentally without a route to optimal doping.

Melt-Centrifuged (Bi,Sb) Te : Engineering Microstructure toward High Thermoelectric Efficiency.

Microstructure engineering is an effective strategy to reduce lattice thermal conductivity (κ ) and enhance the thermoelectric figure of merit (zT). Through a new process based on melt-centrifugation to squeeze out excess eutectic liquid, microstructure modulation is realized to manipulate the formation of dislocations and clean grain boundaries, resulting in a porous network with a platelet structure. In this way, phonon transport is strongly disrupted by a combination of porosity, pore surfaces/junctions, grain boundaries, and lattice dislocations.