| Enhanced thermoelectric performance of PEDOT:PSS films via ionic liquid post-treatment |
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| 作者姓名： | 杨家霁 李雪晶 贾艳华 张弜 蒋庆林 |
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| 作者单位： | 1.Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China;2.Department of Physics, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
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| 基金项目： | supported by the Foundation of Guangzhou Science and Technology Project(B3210530);the Open Fund of the State Key Laboratory of Luminescent Materials and Devices(South China University of Technology,2019-skllmd01)。 |
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| 摘 要： | Thermoelectric(TE)energy harvesting can effectively convert waste heat into electricity,which is a crucial technology to solve energy concerns.As a promising candidate for energy conversion,poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)has gained significant attention owing to its easy doping,high transparency,and solution processability.However,the TE performance of PEDOT:PSS still needs to be further enhanced.Herein,different approaches have been applied for tuning the TE properties:(i)direct dipping PEDOT:PSS thin films in ionic liquid;(ii)post-treatment of the films with concentrated sulfuric acid(H2SO4),and then dipping in ionic liquid.Besides,the same bis(trifluoromethanesulfonyl)amide(TFSI)anion and different cation salts,including 1-ethyl-3-methylimidazolium(EMIM+)and lithium(Li+),are selected to study the influence of varying cation types on the TE properties of PEDOT:PSS.The Seebeck coefficient and electrical conductivity of the PEDOT:PSS film treated with H2SO4EMIM:TFSI increase simultaneously,and the resulting maximum power factor is 46.7μW·m-1·K-2,which may be attributed to the ionic liquid facilitating the rearrangement of the molecular chain of PEDOT.The work provides a reference for the development of organic films with high TE properties.
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| 关 键 词： | PEDOT:PSS ionic liquid thermoelectric performance |
| 收稿时间： | 2021-07-29 |
Enhanced thermoelectric performance of PEDOT: PSS films via ionic liquid post-treatment |
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| Jiaji Yang,Xuejing Li,Yanhua Jia,Jiang Zhang,Qinglin Jiang.Enhanced thermoelectric performance of PEDOT:PSS films via ionic liquid post-treatment[J].Chinese Physics B,2022,31(2):27302-027302. |
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| Authors: | Jiaji Yang Xuejing Li Yanhua Jia Jiang Zhang Qinglin Jiang |
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| Affiliation: | 1.Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China;2.Department of Physics, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
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| Abstract: | Thermoelectric (TE) energy harvesting can effectively convert waste heat into electricity, which is a crucial technology to solve energy concerns. As a promising candidate for energy conversion, poly(3,4-ethylenedioxythiophene):poly (styrene sulfonate) (PEDOT:PSS) has gained significant attention owing to its easy doping, high transparency, and solution processability. However, the TE performance of PEDOT:PSS still needs to be further enhanced. Herein, different approaches have been applied for tuning the TE properties:(i) direct dipping PEDOT:PSS thin films in ionic liquid; (ii) post-treatment of the films with concentrated sulfuric acid (H2SO4), and then dipping in ionic liquid. Besides, the same bis(trifluoromethanesulfonyl)amide (TFSI) anion and different cation salts, including 1-ethyl-3-methylimidazolium (EMIM+) and lithium (Li+), are selected to study the influence of varying cation types on the TE properties of PEDOT:PSS. The Seebeck coefficient and electrical conductivity of the PEDOT:PSS film treated with H2SO4EMIM:TFSI increase simultaneously, and the resulting maximum power factor is 46.7 μW·m-1·K-2, which may be attributed to the ionic liquid facilitating the rearrangement of the molecular chain of PEDOT. The work provides a reference for the development of organic films with high TE properties. |
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| Keywords: | PEDOT:PSS ionic liquid thermoelectric performance |
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