| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ |
| 제목 |
Enhancing thermoelectric performance of diketopyrrolopyrrole-based conjugated polymers with efficient doping by longer thiophene groups |
| 초록 |
Polymer backbone design suitable for efficient doping can provide new directions for improving charge transport and thermoelectric performance. Herein, a novel diketopyrrolopyrrole (DPP)-based conjugated polymer with eight thiophene groups in a repeating unit, EHT6-20DPP, was synthesized to enhance thermoelectric properties. Due to the extended thiophene groups as electron donating units, EHT6-20DPP shows higher doping efficiency with p-type dopant FeCl3 compared to other DPP-based polymers with shorten thiophene groups. The electrical conductivity and power factor of the doped EHT6-20DPP reached to maximum 93.28 S/cm and 56.73 μW/mK2, respectively. These values were found to be better than the reference DPP-based polymer with three thiophene groups in a repeating unit. A charge transport model was used to demonstrate the relationship between thermoelectric properties, indicating excellent charge transport properties of the doped EHT6-20DPP in terms of polymer backbone engineering. |
| 저자 |
이택성1, 김나영2, 이다연2, 오종규1, 이근진2, 김재영3, 안태규3, 정용진3, 김윤희2, 장재영1
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| 소속 |
1한양대, 2경상대, 3한국교통대 |
| 키워드 |
organic thermoelectrics; doping efficiency; sequential doping; polymer backbone engineering; thiophene; diketopyrrolopyrrole
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| E-Mail |
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