Defect-curing Effects on high-crystalline Conjugated Polythiophene Semiconducting thin film by Molecular P-type Sequential Doping
발표자
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초록
내용
Charge-transfer doping is a convenient method to enhance the electrical conductivity of the semiconducting polymer. In the case of the conjugated thiophene-based polymer poly(3-hexylthiophene) (P3HT), a 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) is known as the best candidate for P3HT charge transfer doping. In our previous report, our group developed the eutectic frictional transfer (EFT) method and fabricated P3HT thin film with high crystallinity. In this study, we combined charge-transfer doping with this EFT films using sequential doping. Fabricated films were investigated by polarized optical microscope, polarized UV-vis-NIR, polarized FT-IR imaging, GIWAXS and Raman spectroscopy and shows very high anisotropic character. Moreover, we found that molecular p-doping not only maintains the backbone planarity but rather enhances it by minimizing the torsional reorganization barrier.