[1PS-036]
우수논문발표상 응모자Thienoisoindigo-Based Donor-Acceptor Polymers with Enhanced F4-TCNQ Doping for High Thermoelectric Performance
발표자신상훈 (아주대학교)
연구책임자김종현 (아주대학교)
Abstract
Molecular doping is crucial in conjugated polymers (CPs) for achieving thermoelectric performance. Although strong dopants such as AuCl3 and CN6-CP induce p-type doping, their poor stability limit their practical applicability. In contrast, moderate molecular dopants such as F4-TCNQ exhibit enhanced stability relative to strong dopants. Furthermore, they induce relatively lower carrier densities, leading to higher Seebeck coefficients and power factor. However, conventional donor-acceptor (D-A) polymers show low doping efficiency with F4-TCNQ because of their deep HOMO energy levels.
In this study, the introduction of the thienoisoindigo (TIIG) acceptor unit enables control of energy-level alignment and molecular structure, thereby overcoming limited doping efficiency of donor-acceptor polymers with moderate molecular dopants and achieving both high thermoelectric performance and improved stability.