Organic semiconductors are attracting considerable attention as a new thermoelectric material because of their molecular diversity, non-toxicity and easy processing. The side chains which are introduced into two-dimensional (2D) transition metal dichalcogenides (TMDs) by covalent modification lead to a significant decrease in their thermal conductivity. Here, we describe a simple approach to preparing the side chains covalent modification TaS (SCCM-TaS) organic/inorganic hybrid structures, which is a homogeneous and non-destructive technique that does not depend on defects and boundaries. Electrical conductivity of 3,401 S cm and a power factor of 0.34 mW m K are obtained for a hybrid material of SCCM-TaS, with an in-plane thermal conductivity of 4.0 W m K, which is 7 times smaller than the thermal conductivity of the pristine TaS crystal. The power factor and low thermal conductivity contribute to a thermoelectric figure of merit (ZT) of ~0.04 at 443 K.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9338255 | PMC |
| http://dx.doi.org/10.1038/s41467-022-32058-w | DOI Listing |
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