Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application
Doping of conjugated polymers (CPs) is a promising strategy to obtain solution‐processable 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., pol...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-01-01
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| Series: | Small Structures |
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| Online Access: | https://doi.org/10.1002/sstr.202300321 |
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| author | Da Eun Choi Jaemin Im Yejin Ahn Kyoungtae Hwang Jungwon Kim Ji Eon Kwon Sang Kyu Park Hyun Ho Choi Bong-Gi Kim |
| author_facet | Da Eun Choi Jaemin Im Yejin Ahn Kyoungtae Hwang Jungwon Kim Ji Eon Kwon Sang Kyu Park Hyun Ho Choi Bong-Gi Kim |
| author_sort | Da Eun Choi |
| collection | DOAJ |
| description | Doping of conjugated polymers (CPs) is a promising strategy to obtain solution‐processable 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] (PIDF‐BT) 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 cm2 V−1 s−1. The carrier‐transfer barrier energy is related to the Schottky barrier between the SWCNT and PIDF‐BT, which can be controlled by doping. Finally, when the doped PIDF‐BT@SWCNT is applied to a thermoelectric device, a power factor exceeding 210 μW m−1 K−2 is achieved because of its high electrical conductivity, even if the increased carrier density reduces the Seebeck coefficient. |
| first_indexed | 2024-03-08T15:50:32Z |
| format | Article |
| id | doaj.art-41c62de42bee452ba888d83bf4978988 |
| institution | Directory Open Access Journal |
| issn | 2688-4062 |
| language | English |
| last_indexed | 2024-03-08T15:50:32Z |
| publishDate | 2024-01-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Small Structures |
| spelling | doaj.art-41c62de42bee452ba888d83bf49789882024-01-09T05:33:21ZengWiley-VCHSmall Structures2688-40622024-01-0151n/an/a10.1002/sstr.202300321Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric ApplicationDa Eun Choi0Jaemin Im1Yejin Ahn2Kyoungtae Hwang3Jungwon Kim4Ji Eon Kwon5Sang Kyu Park6Hyun Ho Choi7Bong-Gi Kim8Department of Organic and Nano System Engineering Konkuk University Seoul 05029 KoreaDepartment of Materials Engineering and Convergence Technology Gyeongsang National University Jinju 52828 Republic of KoreaDepartment of Organic and Nano System Engineering Konkuk University Seoul 05029 KoreaInstitute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Jeonbuk 55324 Republic of KoreaInstitute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Jeonbuk 55324 Republic of KoreaInstitute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Jeonbuk 55324 Republic of KoreaInstitute of Advanced Composite Materials Korea Institute of Science and Technology (KIST) Jeonbuk 55324 Republic of KoreaDepartment of Materials Engineering and Convergence Technology Gyeongsang National University Jinju 52828 Republic of KoreaDepartment of Organic and Nano System Engineering Konkuk University Seoul 05029 KoreaDoping of conjugated polymers (CPs) is a promising strategy to obtain solution‐processable 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] (PIDF‐BT) 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 cm2 V−1 s−1. The carrier‐transfer barrier energy is related to the Schottky barrier between the SWCNT and PIDF‐BT, which can be controlled by doping. Finally, when the doped PIDF‐BT@SWCNT is applied to a thermoelectric device, a power factor exceeding 210 μW m−1 K−2 is achieved because of its high electrical conductivity, even if the increased carrier density reduces the Seebeck coefficient.https://doi.org/10.1002/sstr.202300321CP-CNT hybridsdoping mechanismsmobilitiesmolecular dopingsthermoelectric performances |
| spellingShingle | Da Eun Choi Jaemin Im Yejin Ahn Kyoungtae Hwang Jungwon Kim Ji Eon Kwon Sang Kyu Park Hyun Ho Choi Bong-Gi Kim Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application Small Structures CP-CNT hybrids doping mechanisms mobilities molecular dopings thermoelectric performances |
| title | Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application |
| title_full | Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application |
| title_fullStr | Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application |
| title_full_unstemmed | Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application |
| title_short | Sequential Doping of Carbon Nanotube Wrapped by Conjugated Polymer for Highly Conductive Platform and Thermoelectric Application |
| title_sort | sequential doping of carbon nanotube wrapped by conjugated polymer for highly conductive platform and thermoelectric application |
| topic | CP-CNT hybrids doping mechanisms mobilities molecular dopings thermoelectric performances |
| url | https://doi.org/10.1002/sstr.202300321 |
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