期刊
NANO ENERGY
卷 82, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.105681
关键词
Conjugated polymer; Au nanoparticle; Thermoelectric property; Doping stability; Organic thermoelectric generator
类别
资金
- KRICT Core Project
- R&D Convergence Program of the National Research Council of Science and Technology of the Republic of Korea
- Creative Materials Discovery Program through the National Research Foundation of the Republic of Korea (NRF) - Ministry of Science and ICT [2020M3D1A1110505]
- NRF Grant of Korea [2020M3H4A1A01086888]
- National Research Foundation of Korea [2020M3D1A1110505, 2020M3H4A1A01086888] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The electrical conductivity and doping stability of P3HT in ambient air are significantly improved using a gold chloride dopant, resulting in a high-performance thermoelectric material. The doped P3HT shows high electrical conductivity and excellent air stability.
The electrical conductivity and doping stability of poly(3-hexylthiophene) (P3HT) in ambient air are significantly improved using a gold chloride dopant, where the coexistence of AuCl4- and Au nanoparticles contributes to high electrical conductivity and doping stability at the same time. The uniformly formed Au nanoparticles induce a facile charge transfer in a thin film of AuCl3-doped P3HT as examined by the crystallography and transmission electron microscopy. P3HT doped with AuCl3 exhibits a high electrical conductivity of 207 S cm-1, a Seebeck coefficient of 73.9 ?V K-1, and an optimized power factor of 110 ?W m- 1 K-2. Importantly, AuCl3-doped P3HT shows excellent air stability. After exposure to the ambient condition for 300 h, the optimized power factor of the AuCl3-doped P3HT maintains over 80% of the initial, whereas that of the FeCl3-doped P3HT decreases to only 20% of the original. Finally, a flexible and organic thermoelectric generator (OTEG) is fabricated using the AuCl3-doped P3HT by slot-die coating. The OTEG shows a relatively high open-circuit voltage (Voc) of 7.96 mV and a short-circuit current (Isc) of 0.93 ?A, resulting in a power density of 18.5 nW cm-2 at a temperature gradient of 10 ?C.
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