ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Qiufeng Meng,Qinglin Jiang,Kefeng Cai,Lidong Chen
PEDOT:PSS coated Te (PC Te) nanorod/PEDOT:PSS composite films were prepared by a drop-casting technique. H 2 SO 4 treatment was employed to enhance thermoelectric (TE) properties of the composite films. The addition of PC Te nanorods increased both the electrical conductivity and the Seebeck coefficient of the composite films. An optimized power factor of 141.9 μW/mK 2 was obtained for the film containing 90 wt% PC Te nanorods treated with 12 M H 2 SO 4 at room temperature , which was 2.75 times as high as that of the untreated composite film, corresponding to the electrical conductivity and Seebeck coefficient of 204.6 S/cm and 83.27 μV/K, respectively. XPS and GIWAXS analysis revealed the removal of insulating PSS units and the rearrangement of PEDOT chains after the H 2 SO 4 treatment. Finally, a 9-leg TE generator prototype was fabricated using the optimized composite film. The maximum output power and area output power density produced from the prototype were 47.7 nW and 57.2 μW/cm 2 , respectively, at the temperature difference of 40 K.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
高影响因子
Journal of Materials Science-Materials in Engineering
·
2025
·Vol. 20
·期 1
·1-10
·
IF 0
Wang Ruoxi,Sun Rongke,Ren Yanmei,Ma Yanqing,Ma Lei
There is still limited research on the influence of polymer content in inorganic/organic materials on thermoelectric properties. In this study, we systematically investigated the influence of the content of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) in the Ag 2 Se nanowires/PEDOT:PSS (Ag 2 Se NWs/PEDOT:PSS) composite films on the thermoelectric properties. When the content of PEDOT:PSS is 1.54 wt%, the composite film achieved the highest power factor (PF) of ~ 2074.0 µW m −1 K −2 at room temperature. The maximum output power ( P max ) of the single-leg thermoelectric device based on the composite film is approximately 49.42 nW, and the maximum power density (PD max ) is 4.28 W m −2 at a temperature difference of 25 K. Furthermore, the film exhibits superior flexibility with 94.3% of the original performance retention after 2000 bending cycles around a rod with a diameter of 5 mm. This work provides valuable guidance for the design and fabrication of high-performance flexible inorganic/organic composite thermoelectric materials.
研究领域:
材料科学
·
纳米技术
·
能源转换
·
高分子化学
✓ 已验证
产品关联
DOI
JOURNAL OF POLYMER ENGINEERING
·
2017
·Vol. 38
·期 4
·381-389
·
IF 0.658
Yan-Xin Liu,Hai-Hui Liu,Jian-Ping Wang,Xing-Xiang Zhang
Hybrids of poly(3,4-ethylenedioxythiophene) (PEDOT):poly(4-styrene sulfonate) (PSS)/multi-walled carbon nanotube (MWCNT)/graphene (P/M/G), which have high electrical conductivity and low thermal conductivity, were successfully prepared in aqueous solution through in situ polymerization of 3,4-ethylenedioxythiophene (EDOT) monomers in the presence of poly(sodium 4-styrene sulfonate) (PSSNa). Meanwhile, the composites were characterized by Raman spectroscopy, infrared (IR) spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy. Thermoelectric properties of the samples were measured at room temperature and 50°C. Compared with pristine PEDOT:PSS (P), PEDOT:PSS/MWCNT (P/M) and PEDOT:PSS/graphene (P/G), the power factor of P/M/G composites was significantly improved, whatever the temperature. It increased from 0.061 μW/mK 2 to 0.105 μW/mK 2 at room temperature and from 0.070 μW/mK 2 to 0.142 μW/mK 2 at 50°C, meaning 72% and 103% enhancement, respectively. The increased power factor is attributed to the synergic effects of MWCNT and graphene, a hybrid structure with excellent electronic coupling and more electric channels.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 32
·2300886
·
IF 19
Xiaodong Wang,Zuoxu Wu,Yijie Liu,Li Yin,Shuaihang Hou,Jun Mao,Feng Cao,Qian Zhang
Thermal radiation spectrum regulation plays an important role in energy and information fields. Effectively hiding targets and rendering it invisible to infrared imaging detectors are great challenges in past decades. Herein, a smart infrared rewritable and emissivity tunable polymer film is proposed based on PEDOT:PSS. The adjustment ability for the thermal emission is attributed to the mobile polaronic of PEDOT that can be effectively regulated by redox agents, resulting in an infrared emission modulation > 30%. The conformation and molecular stacking order of PEDOT also present reversible property, accompanied with the transformation between dication state and neutral state. Finally, a technique for direct writing and erasing process in the infrared region is implemented, based on the simple redox treating process. This work aims to provide a simple strategy on fabricating rewritable films based on conducting polymer PEDOT:PSS, which can be potentially applied in infrared optics security printing.
研究领域:
材料科学
·
光学工程
·
能源领域
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2016
·
IF 2.101
Feng-Fei Pang,Sen Li,Wen-Quan Sun,Guo-Zhi Han
We report the reversible conductivity and morphology modulation of PEDOT:PSS composites based on pH. Through studying effects of pH on the morphology and conductivity of PEDOT:PSS composites, it was found that different pH of PEDOT:PSS composites solution will result in different morphology of PEDOT:PSS composites film . At the same time, conductivity of the film also changed accordingly. With the increase of pH from 3 to 11, the microstructure of PEDOT:PSS film reversibly changed from a continuous network to non-continuous clusters, and the corresponding conductivity decreased from 0.62 S/cm to 0.42 S/cm. Furthermore, the mechanism was innovatively investigated by Raman spectra , along with UV–Vis spectra and SEM .
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xinhong Zhao,Kai Li,Yongchu Fang,Yu Tao,Xiaoxian Song,Haiting Zhang,Huaqing Yu,Zaoxue Yan
Flexible photodetectors based on vertically stacked PEDOT:PSS/PbS/CsPbCl 3 were prepared by a simple low temperature spin-coating method. Due to the synergistic effect, the flexible PEDOT:PSS/PbS/CsPbCl 3 photodetectors exhibited a high responsivity of 6.67 A/W and detectivity of 5.78 × 10 10 Jones under a relatively low external bias. The photocurrent of a series of continuous-bending shown that the flexible PEDOT:PSS/PbS/CsPbCl 3 photodetectors had excellet photocurrent stability and reproducibility. The results indicate that the vertically stacked PEDOT:PSS/PbS/CsPbCl 3 architecture has great potential in wearable and portable low-voltage optoelectronic devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
INTEGRATED FERROELECTRICS
·
2022
·
IF 0.836
Jun Liu,Yuguo Zhuo,Jiajie Lu,Li Wang,Xuejun Ren
Conductive fibers are widely used in coatings and related applications. An effective production method is important. In this work, reduced graphene oxide (rGO) was added into the solution of poly(3,4-ethylenedioxythiophene) (PEDOT), poly(styrenesulfonate) (PSS) and polyvinyl alcohol (PVA). The rGO/PEDOT: PSS/PVA conductive nanofibers were prepared by electrospinning using a high-speed horizontal rotating collector instead of a traditional plane collector. The thermal behavior of composite nanofibers with rGO showed good stability compared with PEDOT: PSS/PVA nanofibers. The results show that the conductivity of nanofibers film was enhanced significantly by 100% when the content of 0.2% rGO in the PEDOT: PSS/PVA nanofiber. Further increase of rGO component content resulted in a limited increase in conductivity but with a sharp decline of the mechanical properties of the fibers. The tensile property of the nanofibers gained a significant improvement by 46.9% and 66.5% in the arc and radial direction, which indicates that high-speed horizontal rotating reception can make the texture more regular and stronger in the process of electrospinning.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2021
·
IF 3.266
Xing Xin,Jiarui Yu,Nan Gao,Xiaowen Xie,Shuai Chen,Jiang Zhong,Jingkun Xu
In aqueous dispersion of poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS), the mixture dispersion containing different proportion of polyhedral oligomeric silsesquioxanes (POSS) and dimethyl sulfoxide (DMSO) were added. These three components were physically blended to fabricate composite films for improving the mechanical properties and the water resistance of PEDOT:PSS films; a strong drawback hindering their electrical properties. The effect of the ratio of POSS compared to PEDOT:PSS was in particular investigated. It was convincingly proven that the introduction of POSS unit and strong polar DMSO improved surface roughness , hydrophobicity , stability, friction resistance and electrical properties of PEDOT:PSS films.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 40
·13752-13762
·
IF 6.4
Yuanze Meng,Jialun Li,Xijia Yang,Yang Gao,Xuesong Li,Liying Wang,Wei Lü
Poly (3,4-ethylenedioxythiophene): poly (4-styrenesulfonic acid) (PEDOT:PSS) is a kind of widely used polymer with excellent electrical conductivity. In this study, PEDOT:PSS was modified to achieve self-healing ability while maintaining excellent energy storage properties. The modified PEDOT:PSS hybrid film demonstrated instantaneous self-healing ability due to physical cross-linking after being subjected to different external cuts (the average self-healing time was 1.44 s). When pressed at different rates, the film had a self-healing time of less than 0.12 s, and a retention rate of 74% after pressing 1750 times consecutively at a rate of 8.6 cm s−1. The mechanism of self-healing was investigated using theoretical calculations. Tungsten trioxide (WO3) was further introduced into the PEDOT:PSS hybrid film to fabricate electrochromic energy storage devices (EESDs), achieving a specific capacitance of 105.35 mF cm−2 and a capacitance retention of 98.2% after 1000 cycles. In the organic/inorganic hybrid system, the modified PEDOT:PSS film acted as both a protective coating for WO3 and exhibited a synergistic color change with WO3, ultimately improving the overall performance of the device. The present self-healing strategy can help design restorers for EESDs and can be extended to other new rechargeable electrochromic battery systems with good application prospects.
研究领域:
材料科学
·
能源技术
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2025
·
IF 2.6
Xianchun Chen,Junjie Liu,Haoran Zhu,Longzhen Qiu,Xiaohong Wang
Flexible transparent electrodes (FTEs) have been widely used in the field of flexible optoelectronic devices due to their simultaneous conductivity and optical transmittance. However, traditional fabrication methods often struggle to achieve an optimal balance between high conductivity and flexibility, and may also involve high costs and complex processes. Consequently, developing a cost-effective strategy for the large-scale production of high-performance FTEs is crucial. Here, high-performance poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) spray-coated FTEs were prepared by optimizing the PEDOT:PSS conductive ink formulation through doping strategies. The PEDOT:PSS FTEs exhibit a surface resistance of 70 Ω/sq and a transmittance of 80 % at 550 nm. Notably, their optoelectronic properties remain stable after 100 bends, continuous illumination at 2.43 mW/cm 2 , and exposure to 90 % relative humidity. In addition, large-scale FTEs (15 × 15 cm) were successfully produced using the spray-coating method and effectively implemented in flexible touch screens. These results show that optimized conductive ink formulations have great potential for the preparation of low-cost, large-area and uniform FTEs.
研究领域:
材料科学
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Saiyin Hou,Dong Lv,Yinghan Li,Zonglin Li,Mengmeng Liu,Xinhong Yu,Yanchun Han
Wearable dry electrodes are the foundation for the development of long-term, real-time biopotential monitoring devices. However, the physiological signals collected by common electrodes often accompany high noise and motion artifacts due to difficulties in conforming to skin deformations and poor contact between electrodes and skin. In contrast to them, PEDOT:PSS-based dry electrodes become a promising material with adjustable stretchability, conductivity, and adhesion properties to achieve high-quality signal delivery. Herein, we report a highly stretchable self-adhesive film prepared by the conductive polymers PEDOT:PSS, ethylene glycol (EG), poly(vinyl alcohol) (PVA), and d-sorbitol (SOR). In the blending system, SOR will disrupt the dense hydrogen bond interactions within PVA and PSS chains, while PEDOT:PSS/PVA physically cross-linked networks can dissipate strain energy, providing toughness to the films. In addition, the hydroxyl groups on the surface enable the film to be self-adhesive by forming hydrogen bonds with the N and O atoms of the skin stratum corneum. The blended electrode exhibits a conductivity of 200 S/cm and an elongation at break of 120%. Moreover, the electrical properties are still maintained after cyclic stretching (R/R0 ≈ 1.09). The maximum adhesion force of the film on glass and skin is 1.20 and 0.36 N/cm, respectively. The electrode has good biocompatibility, and its excellent stretchability and adhesiveness are conducive to comply with the skin deformation under different conditions. The contact impedance between dry electrodes and skin is only 77 kΩ cm2, which ensures the accurate monitoring of physiological signals including electromyogram (EMG) and electrocardiogram (ECG) during rest or exercise. The signal quality is significantly higher than that of standard Ag/AgCl electrodes. This highly stretchable self-adhesive dry electrode provides a feasible idea for the research of next-generation health monitoring devices.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 5
·335
·
IF 3.504
Xing Gao,Lei Zu,Xiaomin Cai,Ce Li,Huiqin Lian,Yang Liu,Xiaodong Wang,Xiuguo Cui
Insufficient energy density and poor cyclic stability is still challenge for conductive polymer-based supercapacitor. Herein, high performance electrochemical system has been assembled by combining poly (3,4-ethylenedioxythiophene) (PEDOT):poly (styrene sulfonate) (PSS) redox electrode and potassium iodide redox electrolyte, which provide the maximum specific capacity of 51.3 mAh/g and the retention of specific capacity of 87.6% after 3000 cycles due to the synergic effect through a simultaneous redox reaction both in electrode and electrolyte, as well as the catalytic activity for reduction of triiodide of the PEDOT:PSS.Keywords:PEDOT:PSS;catalysis;redox electrolyte;stability
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）