| 초록 |
Organic thermoelectric (TE) materials that can harvest electricity from low-grade thermal energy have been actively studied due to the advantages of light weight, solution processablility, and mechanical flexibility. Here, we demonstrate self-healable and stretchable TE composites, by blending a thermoplastic elastomer for mechanical properties and a polymer semiconductor for TE performances. Doping of the polymer semiconductor with a proper molecular dopant enables to the construction of effective charge transport channels percolated in the thermoplastic elastomer matrix. In particular, donor-acceptor polymers that have superior charge transport properties owing to strong inter/intramolecular interactions can also be successfully doped by the molecular dopant and form ternary blended TE composites. The TE composites exhibit good mechanical/TE properties, endurances under applied strains, and capability to regenerate TE performances after self-healing with mild pressure and/or heat. |
