Abstract
IV–VI-group Sn–chalcogenide-based nanomaterials have attracted interest in various research fields because they offer unique characteristics distinct from their bulk counterparts. The introduction of pores can manipulate the electrical and thermal transport characteristics of the material, which is considered a promising strategy to improve the thermoelectric properties. Herein, we report on the successful fabrication and optimization of porous SnSeS-based nanosheets and their thermoelectric enhancement. Two-dimensional SnSe0.8S0.2 (SnSeS) nanocrystals are chemically exfoliated from a layered bulk structure through a Li-intercalation and exfoliation process. Many pores are successfully introduced to the SnSeS nanosheets by solution-phase chemical transformation, and the porosity of the materials is optimized by manipulating the reaction time, resulting in the effective reduction of the thermal conductivity and enhancement of the thermoelectric performance. The incorporation of nanoscale and porous structure can accelerate research advances regarding nanoscale porous materials and high-performance thermoelectrics.
Published Version
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