conversion due to its extraordinary performance in its single-crystal form and its low-cost
constituent elements. However, to achieve an economic impact, the polycrystalline
counterpart needs to replicate the performance of the single crystal. Herein, we optimize the
thermoelectric performance of polycrystalline SnSe produced by consolidating solution-
processed and surface-engineered SnSe particles. In particular, the SnSe particles are …