Because poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS)is water processable,thermally stable,and highly conductive,PEDOT:PSS and its composites have been considered to be one of the most promising f...Because poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS)is water processable,thermally stable,and highly conductive,PEDOT:PSS and its composites have been considered to be one of the most promising flexible thermoelectric materials.However,the PEDOT:PSS film prepared from its commercial aqueous dispersion usually has very low conductivity,thus cannot be directly utilized for TE applications.Here,a simple environmental friendly strategy via femtosecond laser irradiation without any chemical dopants and treatments was demonstrated.Under optimal conditions,the electrical conductivity of the treated film is increased to 803.1 S cm^(-1)from 1.2 S cm^(-1)around three order of magnitude higher,and the power factor is improved to 19.0μW m^(-1)K^(-2),which is enhanced more than 200 times.The mechanism for such remarkable enhancement was attributed to the transition of the PEDOT chains from a coil to a linear or expanded coil conformation,reduction of the interplanar stacking distance,and the removal of insulating PSS with increasing the oxidation level of PEDOT,facilitating the charge transportation.This work presents an effective route for fabricating high-performance flexible conductive polymer films and wearable thermoelectric devices.展开更多
In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grow...In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grown Sn:α-Ga_(2)O_(3) film.This approach provides a facile and low-cost p-PEDOT:PSS/n-Sn:α-Ga_(2)O_(3) spin-coating method that facilitates self-powering per-formance through p-n junction formation.A typical type-Ⅰheterojunction is formed at the interface of Sn:α-Ga_(2)O_(3) film and PEDOT:PSS,and contributes to a significant photovoltaic effect with an open-circuit voltage(Voc)of 0.4 V under the 254 nm ultra-violet(UV)light.When operating in self-powered mode,the HJD exhibits excellent photo-response performance including an outstanding photo-current of 10.9 nA,a rapid rise/decay time of 0.38/0.28 s,and a large on/off ratio of 91.2.Additionally,the HJD also possesses excellent photo-detection performance with a high responsivity of 5.61 mA/W and a good detectivity of 1.15×1011 Jones at 0 V bias under 254 nm UV light illumination.Overall,this work may explore the potential range of self-pow-ered and high-performance UV photodetectors.展开更多
改进了聚(3,4-乙烯基二氧噻吩)/聚(苯乙烯磺酸盐)(PEDOT:PSS)的合成技术。采用对甲苯磺酸铁[(Fe(OTs)_(3))]作为催化剂,并在反应中引入磷酸三乙酯作为水溶性助剂并辅助催化反应且消泡稳黏,以优化PEDOT:PSS的成膜性能。同时,利用微通道...改进了聚(3,4-乙烯基二氧噻吩)/聚(苯乙烯磺酸盐)(PEDOT:PSS)的合成技术。采用对甲苯磺酸铁[(Fe(OTs)_(3))]作为催化剂,并在反应中引入磷酸三乙酯作为水溶性助剂并辅助催化反应且消泡稳黏,以优化PEDOT:PSS的成膜性能。同时,利用微通道搅拌方法制备了均匀粒径(<50 nm)的OE-004 PEDOT:PSS分散液,然后将OE-004应用于器件表征以全面评估OE-004与Clevios P VP AI 4083的性能差异并验证其适用性。研究结果表明,OE-004材料因更均匀的粒径尺寸和优化的微观配比,在PM6:L8-BO器件中表现出与Clevios P VP AI 4083基本一致的优秀空穴传输性能,实现了17.72%的最佳光电转换效率。器件复合过程研究表明OE-004呈现出良好的空穴提取和传输能力,在抑制器件内部的单分子复合或陷阱辅助复合方面表现出色。这些结果清晰验证了OE-004在有机太阳能电池中的适用性,其优异性能为空穴用PEDOT:PSS提供了理想的国产产品。展开更多
聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)具有良好的导电性和柔性,在可穿戴的柔性电致变色器件和柔性太阳能电池中显示出巨大的潜力。通过不同的化学沉积和物理掺杂可以更大的提高PEDOT:PSS的电化学性能。目前PEDOT:PSS在有机...聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)具有良好的导电性和柔性,在可穿戴的柔性电致变色器件和柔性太阳能电池中显示出巨大的潜力。通过不同的化学沉积和物理掺杂可以更大的提高PEDOT:PSS的电化学性能。目前PEDOT:PSS在有机太阳能电池(Organic solar cells, OSCs)空穴传输层(HTL)的应用研究极为广泛,但是其具有低电导率、水/氧敏感、腐蚀电极等缺陷。为了追求优异的性能,常用的PEDOT:PSS空穴传输层仍需优化。本文综述了近年来PEDOT:PSS的各种改善方法和在有机太阳能电池空穴传输层中的应用研究最新进展,并介绍了PEDOT:PSS在柔性有机太阳能电池的应用。展开更多
基金supported by the National Key Research and Development Program of China(2020YFA0715000)the Guangdong Basic and Applied Basic Research Foundation(2020A1515110250,2021B1515120041)+1 种基金the Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory(XHT2020-005)the Fundamental Research Funds for the Central Universities(2020IVA068,2021lll007JC)
文摘Because poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)(PEDOT:PSS)is water processable,thermally stable,and highly conductive,PEDOT:PSS and its composites have been considered to be one of the most promising flexible thermoelectric materials.However,the PEDOT:PSS film prepared from its commercial aqueous dispersion usually has very low conductivity,thus cannot be directly utilized for TE applications.Here,a simple environmental friendly strategy via femtosecond laser irradiation without any chemical dopants and treatments was demonstrated.Under optimal conditions,the electrical conductivity of the treated film is increased to 803.1 S cm^(-1)from 1.2 S cm^(-1)around three order of magnitude higher,and the power factor is improved to 19.0μW m^(-1)K^(-2),which is enhanced more than 200 times.The mechanism for such remarkable enhancement was attributed to the transition of the PEDOT chains from a coil to a linear or expanded coil conformation,reduction of the interplanar stacking distance,and the removal of insulating PSS with increasing the oxidation level of PEDOT,facilitating the charge transportation.This work presents an effective route for fabricating high-performance flexible conductive polymer films and wearable thermoelectric devices.
基金supported by the National Key Research and Development Program of China (Grant No.2022YFB3605404)the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos.62204125,62305171,62204126,and 62304113)+3 种基金the Joints Fund of the National Natural Science Foundation of China (Grant No.U23A20349)the Natural Science Foundation of Jiangsu Province (Grant No.BK20230361)the Natural Science Research Startup Foundation of Recuring Talents of Nanjing University of Posts and Telecommunications (Grant No.XK1060921119)the Jiangsu Provincial Team of Innovation and Entrepreneurship (Grant No.JSSCTD202351).
文摘In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grown Sn:α-Ga_(2)O_(3) film.This approach provides a facile and low-cost p-PEDOT:PSS/n-Sn:α-Ga_(2)O_(3) spin-coating method that facilitates self-powering per-formance through p-n junction formation.A typical type-Ⅰheterojunction is formed at the interface of Sn:α-Ga_(2)O_(3) film and PEDOT:PSS,and contributes to a significant photovoltaic effect with an open-circuit voltage(Voc)of 0.4 V under the 254 nm ultra-violet(UV)light.When operating in self-powered mode,the HJD exhibits excellent photo-response performance including an outstanding photo-current of 10.9 nA,a rapid rise/decay time of 0.38/0.28 s,and a large on/off ratio of 91.2.Additionally,the HJD also possesses excellent photo-detection performance with a high responsivity of 5.61 mA/W and a good detectivity of 1.15×1011 Jones at 0 V bias under 254 nm UV light illumination.Overall,this work may explore the potential range of self-pow-ered and high-performance UV photodetectors.
文摘改进了聚(3,4-乙烯基二氧噻吩)/聚(苯乙烯磺酸盐)(PEDOT:PSS)的合成技术。采用对甲苯磺酸铁[(Fe(OTs)_(3))]作为催化剂,并在反应中引入磷酸三乙酯作为水溶性助剂并辅助催化反应且消泡稳黏,以优化PEDOT:PSS的成膜性能。同时,利用微通道搅拌方法制备了均匀粒径(<50 nm)的OE-004 PEDOT:PSS分散液,然后将OE-004应用于器件表征以全面评估OE-004与Clevios P VP AI 4083的性能差异并验证其适用性。研究结果表明,OE-004材料因更均匀的粒径尺寸和优化的微观配比,在PM6:L8-BO器件中表现出与Clevios P VP AI 4083基本一致的优秀空穴传输性能,实现了17.72%的最佳光电转换效率。器件复合过程研究表明OE-004呈现出良好的空穴提取和传输能力,在抑制器件内部的单分子复合或陷阱辅助复合方面表现出色。这些结果清晰验证了OE-004在有机太阳能电池中的适用性,其优异性能为空穴用PEDOT:PSS提供了理想的国产产品。
文摘聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸盐(PEDOT:PSS)具有良好的导电性和柔性,在可穿戴的柔性电致变色器件和柔性太阳能电池中显示出巨大的潜力。通过不同的化学沉积和物理掺杂可以更大的提高PEDOT:PSS的电化学性能。目前PEDOT:PSS在有机太阳能电池(Organic solar cells, OSCs)空穴传输层(HTL)的应用研究极为广泛,但是其具有低电导率、水/氧敏感、腐蚀电极等缺陷。为了追求优异的性能,常用的PEDOT:PSS空穴传输层仍需优化。本文综述了近年来PEDOT:PSS的各种改善方法和在有机太阳能电池空穴传输层中的应用研究最新进展,并介绍了PEDOT:PSS在柔性有机太阳能电池的应用。
