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Studies for Enhancing Doping Efficiency, Thermoelectrical Property, and Stability of Conjugated Polymers
- Author(s)
- 서보은
- Alternative Author(s)
- Bo Eun Seo
- Advisor
- 김종현
- Department
- 일반대학원 분자과학기술학과
- Publisher
- The Graduate School, Ajou University
- Publication Year
- 2022-02
- Language
- kor
- Keyword
- Chemical doping; Conjugated Polymers; Doping Efficiency; Doping Stability; Electrical Conductivity; Thermoelectric Properties
- Alternative Abstract
- Chemical doping for conjugated polymers (CPs) is an important tool for enhancing electric and thermoelectric (TE) properties. Despite its poor air stability, FeCl3 has been used as a powerful p-type dopant for CPs with high doping efficiency and demonstrated a high level of TE Performances. In this study, we investigated four salt type of Metal (III) Halides, namely FeCl3, FeBr3, AuCl3, and AuBr3, for doping in poly(3-hexylthiophene) (P3HT) and determined characteristics, doping efficiency, and stability over air-exposed time. Especially, AuBr3 showed the highest doping efficiency and air-stability in this study. AuBr3 doped P3HT achieved high electrical conductivity, 827.60 S cm-1, yielded a thermoelectric power factor (PF), PF = α2σ of 87.20 μW M-1 K-2, and retains its PF value as 43.19 % over 336 h, whereas that of FeCl3-doped P3HT remained only under 0.24 % over 96 hr. Further, these doping results show a similar tendency as that of another CPs type, Poly[2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene] (PBTTT-C14), implying our results can be applied generally to other kinds of p-type conjugated polymers.
- Fulltext
- Appears in Collections:
- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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