TY - JOUR
T1 - Influence of pressure of nitrogen gas on structure and thermoelectric properties of acid-treated PEDOT:PSS films
AU - Myint, May Thu Zar
AU - Inoue, Hirotaka
AU - Ichimura, Susumu
AU - Nishikawa, Takeshi
AU - Nishina, Yuta
AU - Kyaw, Aung Ko Ko
AU - Hayashi, Yasuhiko
N1 - Funding Information:
This work was partially supported by the JSPS KAKENHI (Grant Numbers 17K20065 and 18H01708). AKKK would like to thank financial support from Shenzhen Science, Technology and Innovation Commission (Basic Research Project (No. JCYJ20180305180645221) and Shenzhen Peacock Team Project (No. KQTD2016030111203005)).
Funding Information:
This work was partially supported by the JSPS KAKENHI (Grant Numbers 17K20065 and 18H01708). AKKK would like to thank financial support from Shenzhen Science, Technology and Innovation Commission (Basic Research Project (No. JCYJ20180305180645221) and Shenzhen Peacock Team Project (No. KQTD2016030111203005)).
PY - 2019/7/30
Y1 - 2019/7/30
N2 - Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is the most commonly investigated conductive polymer due to its unique thermoelectric properties. Several post treatments using various acids have been reported to improve the thermoelectric properties of PEDOT:PSS. In most articles, however, only the role of acids on the structure and thermoelectric properties of PEDOT:PSS were reported. In this article, we report the major role of the pressure of nitrogen gas (N2) on the structure and thermoelectric properties of PEDOT:PSS after treatment with various acids at optimized temperatures. After treatment with acids followed by N2 gas-passing, electrical conductivity enhances significantly. Therefore, N2 gas-passing after acid treatments results in higher thermoelectric properties than other traditional acid treatment methods. The enhancement in electrical conductivity is attributed to the removal of insulating PSS and the conformational change of the PEDOT chain. Furthermore, the pressure of N2 is responsible for the additional conformation of PEDOT chain, favoring the linear orientation of the PEDOT structure and resulting in an improvement of the electrical conductivity.
AB - Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is the most commonly investigated conductive polymer due to its unique thermoelectric properties. Several post treatments using various acids have been reported to improve the thermoelectric properties of PEDOT:PSS. In most articles, however, only the role of acids on the structure and thermoelectric properties of PEDOT:PSS were reported. In this article, we report the major role of the pressure of nitrogen gas (N2) on the structure and thermoelectric properties of PEDOT:PSS after treatment with various acids at optimized temperatures. After treatment with acids followed by N2 gas-passing, electrical conductivity enhances significantly. Therefore, N2 gas-passing after acid treatments results in higher thermoelectric properties than other traditional acid treatment methods. The enhancement in electrical conductivity is attributed to the removal of insulating PSS and the conformational change of the PEDOT chain. Furthermore, the pressure of N2 is responsible for the additional conformation of PEDOT chain, favoring the linear orientation of the PEDOT structure and resulting in an improvement of the electrical conductivity.
UR - http://www.scopus.com/inward/record.url?scp=85068822294&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068822294&partnerID=8YFLogxK
U2 - 10.1007/s10854-019-01721-2
DO - 10.1007/s10854-019-01721-2
M3 - Article
AN - SCOPUS:85068822294
VL - 30
SP - 13534
EP - 13542
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
SN - 0957-4522
IS - 14
ER -