Improved room-temperature thermoelectric characteristics in F4TCNQ-doped CNT yarn/P3HT composite by controlled doping

Myint, May Thu Zar1; Nishikawa, Takeshi2; Inoue, Hirotaka2; Omoto, Kazuki2; Kyaw, Aung Ko Ko3; Hayashi, Yasuhiko2

2021-03-01

10.1016/j.orgel.2020.106056

ORGANIC ELECTRONICS   影响因子和分区

1566-1199

1878-5530

High room-temperature thermoelectric performance is important for low-grade waste heat power generation as there are plenty of heat thrown away uselessly in our daily life, most of which are below 100 degrees C. However, most of the thermoelectric materials are limited to high temperature application. In this work, room-temperature thermoelectric power factor of carbon nanotube (CNT) yarn is improved by controlled doping, which is achieved by making composite with poly 3-hexylthiophene -2, 5-diyl (P3HT) followed by doping with 2, 3, 5, 6-tetrafluo-7, 7, 8, 8-tetracyanoquinodimethane (F4TCNQ). The temperature-dependent Seebeck coefficient based on power-law model suggests that P3HT shifts the Fermi energy of CNT yarn towards the valence band edge, and reduces the ionic scattering and carrier relaxation time. As a result, the Seebeck coefficient is increased while the variation of Seebeck coefficient with temperature is reduced, and hence, the room-temperature thermoelectric power factor is improved. With controlled doping, the power factor of CNT yarn/P3HT composite reaches to 1640-2160 mu W m(-1)K(-2) at the temperature range of 25-100 degrees C, which is higher than that of CNT yarn alone.

Room-temperature thermoelectric P3HT CNT yarn F4TCNQ doped Conducting polymer composite

SCI ; EI

英语

通讯

JSPS KAKENHI["17K20065","18H01708"] ; Shenzhen Science and Technology Innovation Commission (Basic Research Project)[JCYJ20180305180645221] ; Highlevel University Fund[G02236004] ; Shenzhen Peacock Team Project[KQTD2016030111203005]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied

WOS:000617805400004

ELSEVIER

20210409813176

Carbon nanotubes ; Electric power factor ; High temperature applications ; Seebeck coefficient ; Thermoelectric power ; Thermoelectric power plants ; Thermoelectricity ; Waste heat ; Wool ; Yarn

Energy Losses (industrial and residential):525.4 ; Thermoelectric Energy:615.4 ; Electricity: Basic Concepts and Phenomena:701.1 ; Nanotechnology:761 ; Fiber Products:819.4 ; Agricultural Products:821.4

PHYSICS

Web of Science

1.Univ Technol Yatanarpon Cyber City, Fac Adv Mat Engn, Pyin Oo Lwin, Myanmar
2.Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Myint, May Thu Zar,Nishikawa, Takeshi,Inoue, Hirotaka,et al. Improved room-temperature thermoelectric characteristics in F4TCNQ-doped CNT yarn/P3HT composite by controlled doping[J]. ORGANIC ELECTRONICS,2021,90.

Myint, May Thu Zar,Nishikawa, Takeshi,Inoue, Hirotaka,Omoto, Kazuki,Kyaw, Aung Ko Ko,&Hayashi, Yasuhiko.(2021).Improved room-temperature thermoelectric characteristics in F4TCNQ-doped CNT yarn/P3HT composite by controlled doping.ORGANIC ELECTRONICS,90.

Myint, May Thu Zar,et al."Improved room-temperature thermoelectric characteristics in F4TCNQ-doped CNT yarn/P3HT composite by controlled doping".ORGANIC ELECTRONICS 90(2021).