Effects of solvents on thermoelectric performance of PANi/PEDOT/PSS composite films |
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| Authors: | Fengxing Jiang Liangying Wang Changcun Li Xiaodong Wang Yongjing Hu Huixuan Liu Hui Yang Feng Zhao Jingkun Xu |
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| Affiliation: | 1.Department of Physics,Jiangxi Science and Technology Normal University,Nanchang,China;2.Key Laboratory of Automobile Materials of MOE, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Department of Materials Science,Jilin University,Changchun,China |
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| Abstract: | Organic thermoelectric materials based on conducting polymers, especially for polyaniline (PANi) and poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS), have attracted great concern due to their tunable electron transport properties by controlling doping level. Here, the solvent effects of deionized H2O and NH3·H2O were investigated on the electrical conductivity and Seebeck coefficient of PANi/PEDOT/PSS composite films. The introduction of PEDOT/PSS can not only effectively improve the quality of pure PANi film, but also enhance the electrical conductivity of PANi film. The different volumes of deionized H2O as dilution have a great influence on the electrical conductivity of PANi/PEDOT/PSS composite thin film with a maximum electrical conductivity value of 63.5 S cm?1, which is much higher than pure PANi and pristine PEDOT/PSS. The introduction of NH3·H2O shows a positive effect on Seebeck coefficient with a large decline on electrical conductivity of PANi/PEDOT/PSS. The Raman spectroscopy, scanning electron microscopy (SEM), and UV-vis spectroscopy were used to obtain the morphology and structure information of PANi/PEDOT/PSS. |
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