TY - JOUR
T1 - Thermoelectric properties of PEDOT/PSS films prepared by a Gel-film formation process
AU - Maeda, Ryota
AU - Kawakami, Hiroshi
AU - Shinohara, Yoshikazu
AU - Kanazawa, Ikuzo
AU - Mitsuishi, Masaya
N1 - Funding Information:
The authors gratefully thank the joint program of NIMS-DENKA Center of Excellence for Next Generation Materials for the financial support. This study was supported by NIMS Nanofabrication Platform in Nanotechnology Platform Project sponsored by MEXT, Japan .
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/9/15
Y1 - 2019/9/15
N2 - We have developed a technique for fabricating films of the thermoelectric material, PEDOT/PSS, with enhanced thermoelectric properties via a gel-film formation process. The salient features of the process are 1) the absence of any commonly used pre- and post-treatment steps and 2) wide film thickness control. The new process is different from direct film-formation processes such as the spin-coating and drop-casting methods. The film thickness can be controlled in the range of 1 to 30 μm. In this study, we investigated the dependence of the electrical conductivity (σ) and Seebeck coefficient (S) on the film thickness (d). While the value of σ increased with decreasing d, S decreased slightly with decreasing d. By this process, values of σ=1070S/cm and S=16.0μV/K were achieved for d=1.1μm, using ethanol as the gelling solvent. Ethanol plays the important roles of removing excess PSS and inducing subsequent gelling.
AB - We have developed a technique for fabricating films of the thermoelectric material, PEDOT/PSS, with enhanced thermoelectric properties via a gel-film formation process. The salient features of the process are 1) the absence of any commonly used pre- and post-treatment steps and 2) wide film thickness control. The new process is different from direct film-formation processes such as the spin-coating and drop-casting methods. The film thickness can be controlled in the range of 1 to 30 μm. In this study, we investigated the dependence of the electrical conductivity (σ) and Seebeck coefficient (S) on the film thickness (d). While the value of σ increased with decreasing d, S decreased slightly with decreasing d. By this process, values of σ=1070S/cm and S=16.0μV/K were achieved for d=1.1μm, using ethanol as the gelling solvent. Ethanol plays the important roles of removing excess PSS and inducing subsequent gelling.
KW - Conductive polymer
KW - Novel film fabrication
KW - Organic thermoelectric material
KW - PEDOT/PSS
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U2 - 10.1016/j.matlet.2019.05.005
DO - 10.1016/j.matlet.2019.05.005
M3 - Article
AN - SCOPUS:85065781258
SN - 0167-577X
VL - 251
SP - 169
EP - 171
JO - Materials Letters
JF - Materials Letters
ER -