【摘 要】
：
High-performance organic composite thermoelectric (TE) materials are considered as a promising alternative for har-vesting heat energy.Herein,composite films of poly (3,4-ethyienedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotubes (PEDO
【机 构】
：
College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China;Shenzhe
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High-performance organic composite thermoelectric (TE) materials are considered as a promising alternative for har-vesting heat energy.Herein,composite films of poly (3,4-ethyienedioxythiophene):poly(styrene sulfonate)/single-walled carbon nanotubes (PEDOT:PSS/SWCNTs) were fabricated by utilizing a convenient solution mixing method.Thereafter,the as-prepared hybrid films were treated using sulfuric acid (H2SO4) to further optimize the TE performance.Film mor-phological studies revealed that the sulfuric acid treated PEDOT:PSS/SWCNTs composite samples all possessed porous structures.Due to the successful fabrication of highly conductive networks,the porous nano-architecture also exhibited much more excellent TE properties when compared with the dense structure of the pristine samples.For the post-treated sample,a high power factor of 156.43 μW·m-1 ·K-2 can be achieved by adjusting the content of CNTs,which is approx-imately 3 orders of magnitude higher than that of the corresponding untreated samples (0.23 μW·m-1 ·K-2).Besides,the obtained films also showed excellent mechanical flexibility,owing to the porous nanostructure and the strong π-π inter-actions between the two components.This work indicates that the H2SO4 treatment could be a promising strategy for fabricating highly-flexible and porous PEDOT:PSS/SWCNTs films with high TE performances.
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