Choi, Da Eun Im, Jaemin Ahn, Yejin Hwang, Kyoungtae Kim, Jungwon Kwon, Ji Eon Park, Sang Kyu Choi, Hyun Ho Kim, Bong-Gi 2024-01-19T08:01:37Z 2024-01-19T08:01:37Z 2023-10-29 2024-01 https://pubs.kist.re.kr/handle/201004/112983 Doping of conjugated polymers (CPs) is a promising strategy to obtain solutionprocessable and highly conductive films; however, the improvement in electrical conductivity is limited owing to the relatively poor carrier mobility of CPs. Herein, a CP with excellent molecular doping ability, i.e., poly[2-([2,2 '-bithiophen]-5-yl)3,8-difluoro-5,10- bis(5-octylpentadecyl)-5,10-dihydroindolo[3,2-b]indole] (PIDFBT) is wrapped onto the surface of single-walled carbon nanotubes (SWCNTs). The resulting PIDF-BT@SWCNT simultaneously achieves excellent solution dispersibility and a high electrical conductivity of over 5000 S cm(-1) through AuCl3 doping. The doping mechanism is systematically studied using spectroscopic analysis, and the four-probe field-effect transistor based on the doped PIDF-BT@SWCNT confirms a carrier mobility up to 138 cm(2) V-1 s(-1). The carriertransfer barrier energy is related to the Schottky barrier between the SWCNT and PIDF-BT, which can be controlled by doping. Finally, when the doped PIDFBT@SWCNT is applied to a thermoelectric device, a power factor exceeding 210 mu Wm(-1) K-2 is achieved because of its high electrical conductivity, even if the increased carrier density reduces the Seebeck coefficient. English WILEY Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application Article 10.1002/sstr.202300321 1 Small Structures, v.5, no.1 Small Structures 5 1 Y scie 001072131400001 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article CHARGE-TRANSPORT ORGANIC SEMICONDUCTORS NETWORKS COMPOSITES CP-CNT hybrids doping mechanisms mobilities molecular dopings thermoelectric performances