TY - JOUR
T1 - Comparison of thermoelectric properties of sorted and unsorted semiconducting single-walled carbon nanotube free-standing sheets
AU - Borah, Angana
AU - Huang, Wenxin
AU - Ishii, Taiki
AU - Yamaguchi, Ryohei
AU - Honjo, Emi
AU - Tanaka, Naoki
AU - Fujigaya, Tsuyohiko
N1 - Funding Information:
This research was supported by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan (Grant No. 205295), under the Nanotechnology Platform Project of MEXT, Japan; KAKENHI (Grant No. JP18H01816, JP19K23633, and JP20K15355), and the Bilateral Program (Grant No. AJ190078) of the Japan Society for the Promotion of Science (JSPS), CREST program (Grant No. AJ199002) and ACT-X (No. JPMJAX21KB) from the Japan Science and Technology Agency (JST), and The Thermal and Electric Energy Technology (TEET) Foundation.
Publisher Copyright:
© 2022 The Japan Society of Applied Physics.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Semiconducting single-walled carbon nanotubes (s-SWCNTs) are promising materials for thermoelectric generation (TEG) because of their large theoretical Seebeck coefficient (S). In this study, to discuss superiority of s-SWCNTs for TEG devices, thermoelectric properties of free-standing s-SWCNT sheets were compared with unsorted SWCNT sheets. To obtain the highest power density, the films were doped with triethyloxonium hexachloroantimonate and 2-(2-methoxyphenyl)-1,3-dimethyl-2,3-dihydro-1H-benzo[d]imidazole as the hole and electron dopants, respectively. The doped s-SWCNT sheets exhibited higher S but lower electrical conductivity than those of the unsorted SWCNT sheets. Consequently, the power factor of the s-SWCNT sheets was lower than that of the unsorted SWCNT sheets.
AB - Semiconducting single-walled carbon nanotubes (s-SWCNTs) are promising materials for thermoelectric generation (TEG) because of their large theoretical Seebeck coefficient (S). In this study, to discuss superiority of s-SWCNTs for TEG devices, thermoelectric properties of free-standing s-SWCNT sheets were compared with unsorted SWCNT sheets. To obtain the highest power density, the films were doped with triethyloxonium hexachloroantimonate and 2-(2-methoxyphenyl)-1,3-dimethyl-2,3-dihydro-1H-benzo[d]imidazole as the hole and electron dopants, respectively. The doped s-SWCNT sheets exhibited higher S but lower electrical conductivity than those of the unsorted SWCNT sheets. Consequently, the power factor of the s-SWCNT sheets was lower than that of the unsorted SWCNT sheets.
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U2 - 10.35848/1347-4065/ac9e82
DO - 10.35848/1347-4065/ac9e82
M3 - Article
AN - SCOPUS:85144321077
SN - 0021-4922
VL - 61
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 12
M1 - 121004
ER -