Maximized Thermoelectric Performance: Exploring the Design of Donor–Acceptor Polymer and Efficient Doping Processes
발표자
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초록
내용
The investigation of polymer-dopant compatibility opens new possibilities for achieving enhanced thermoelectric (TE) performance. In this study, a novel donor-acceptor conjugated polymer, PBDTC2FBT, was designed with high dopant compatibility, containing two electron donor parts and one acceptor per repeat unit. PBDTC2FBT exhibits local short-range ordering, maintaining its crystal stability despite various dopants and doping methods. Therefore, Charge transport in PBDTC2FBT depends on doping strategies, and it needs to investigate between facilitated charge transport and Coulomb binding energy. The doped PBDTC2FBT shows an optimized power factor of 35.1 μW m-1 K-2 along the adequate doping method, close to the theoretical maximum (36.3 μW m-1 K-2) based on the charge transport model. The study provides valuable strategies for maximizing TE performance by considering the relationship between polymer and doping methods.