| 학회 |
한국고분자학회 |
| 학술대회 |
2017년 가을 (10/11 ~ 10/13, 제주컨벤션센터) |
| 권호 |
42권 2호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Control of Electronic Structure of Directly Spun Carbon Nanotube Webs for thermoelectric generator with Various Molecular Dopants |
| 초록 |
The development of n-type polymers and composites to pair with their p-type counterparts in current flexible thermoelectric generators is crucial to reach the full potential of these devices. However, this development has lagged behind because of difficulties associated with n-type doping of organic semiconductors. Our study focused on the doping characteristics of directly spun carbon nanotube webs using various n-type dopants in combination with thermal desorption of oxygen from the CNT web surface for more effective n-type doping. Annealing of the CNT web followed by treatment with 2 mg/mL benzyl viologen resulted in a maximum power factor of 3103 μW m-1 K-2. This value is the highest among organic TE materials and similar to that of the most promising inorganic materia of Bi2Te3 in the room temperaure. Finally, a p–n junction-type TE module with an unprecedented power density of 1.18 mW cm-2 was fabricated based on the development of these competitive n-type TE materials. |
| 저자 |
안승건, 강영훈, 조성윤
|
| 소속 |
한국화학(연) |
| 키워드 |
n-type thermoelectrics; molecular dopant; directly spinning; carbon nanotube web; flexible; thermoelectric generator
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| E-Mail |
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