Nanocomposites from Solution‐Synthesized PbTe‐BiSbTe Nanoheterostructure with Unity Figure of Merit at Low‐Medium Temperatures (500–600 K)

A scalable, low-temperature solution process is used to synthesize precursor material for Pb-doped Bi0.7Sb1.3Te3 thermoelectric nanocomposites. The controllable Pb-doping leads to the increase in the optical bandgap, thus delaying the onset of bipolar conduction. Furthermore, the solution synthesis enables nanostructuring, which greatly reduces thermal conductivity. As a result, this material exhibits a zT = 1 over the 513–613 K range. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.