ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chenxi Liu,Mengze Li,Yifan Wang,Zijie Hou,Jian Chen,Kun Cao,Lihui Liu,Shufen Chen
The development of flexible organic light-emitting didoes (FOLEDs) has spurred the research on flexible transparent electrodes (FTEs). Poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) is one of the most attractive FTEs due to its adjustable conductivity and compatibility with low-cost and large-scale solution processing techniques. Significantly, highly efficient FOLEDs have been achieved with modified PEDOT:PSS FTEs. However, the intrinsic mechanisms that contribute to device degradation of FOLEDs utilizing PEDOT:PSS FTEs have not yet been fully elucidated. In this work, three ionic liquids (ILs) are used to enhance the electrical conductivity and mechanical flexibility of PEDOT:PSS FTEs. Simultaneously, the influence of the electric field induced ion migration from PEDOT:PSS FTEs on the operational stability of FOLEDs is unraveled. We find that the ILs with larger ionic radii and higher steric hindrance are beneficial to suppressing the electrical field induced ion migration and improving the operational stability of FOLEDs. Finally, large-area and high-performance FOLEDs are achieved based on the IL of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide modified PEDOT:PSS FTEs, which demonstrate a high current efficiency of 98.1 cd/A and a longer lifetime of 66.7 min. This finding may promote the practical application of PEDOT:PSS FTEs in flexible optoelectronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
·
2020
·
IF 3.286
Xing Xin,Zexu Xue,Nan Gao,Jiarui Yu,Hongtao Liu,Wenna Zhang,Jingkun Xu,Shuai Chen
Conducting polymers (CPs), poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films, have shown excellent applications in the field of flexible electronics. In most cases, conductivity-enhancement reagents, such as popular dimethyl sulfoxide (DMSO), ethylene glycol (EG) and polyethylene glycol (PEG) have been demonstrated as necessary additives. However, their effects on the self-healing performances of such films were still unknown. Here, effects of these reagents as well as inorganic concentrated sulfuric acid (H 2 SO 4 ) on the water-induced mechanical and electronic (conductive and thermoelectric) self-healing properties of PEDOT:PSS films were studied and corresponding mechanisms were illustrated. Meanwhile, analogous poly(3,4-ethylenedioxyselenophene):poly(styrene sulfonate) (PEDOS:PSS) film was investigated as a contrast. Treatment by EG showed 98 % recovery of conductivity and significantly reduced crack width after healing, while H 2 SO 4 post-treatment only improved the self-healing of mechanical properties but significantly weakened the electrical properties. PEG or DMSO treatment showed negative influence on the self-healing of PEDOTs:PSS films. Since flexible electronic applications of PEDOTs:PSS films are highly inseparable from various additives or post-treatment, this initial research will help to clarify and optimize the synergy between electronic and self-healing behaviors.
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
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Wendong Liu,Zhihui Lei,Rui Yang,Wenkui Xing,Peng Tao,Wen Shang,Benwei Fu,Chengyi Song,Tao Deng
This paper studies the impact of hot pressing on the electrical and thermal performance of thick (thickness >5 μm) conducting polymer poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films after acid treatment. Thick conducting polymer films usually exhibit low electrical and thermal conductivities similar to bulk polymer because charge and heat carriers are easily scattered by the irregular arrangement of crystalline domains inside the polymer. In this work, the in-plane electrical conductivity of thick hot-pressed PEDOT:PSS film exceeded 1500 S/cm, and 50% enhancement was obtained in comparison with its non-hot-pressed counterparts. Its in-plane thermal conductivity reached as high as 1.11 W/mK (improved by almost 100% compared to acid-treated PEDOT:PSS films), which is comparable to that of some commercial thermal pads. Such electrical and thermal enhancement via the hot-pressing process is attributed to the optimized morphology and microstructures, which provide short paths for thermal and electrical transportation. We have also demonstrated that the hot-pressed PEDOT:PSS films could be potentially utilized as a flexible conductor and heat spreader for application in flexible electronics and thermal management, respectively. This study not only offers a new insight into the process–property relationship for conducting polymers but also further enables the use of PEDOT:PSS films with simultaneously improved electrical and thermal performance in practical applications, such as thermal management for organic electrodes in batteries, flexible electronics, soft robotics, and bioelectronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2021
·
IF 6.617
Yingjuan Sun,Jiefeng Zheng,Yang Yang,Jianhao Zhao,Jianhua Rong,Hongyan Li,Li Niu
We reports an all-conductive polymers composite with cross-linking network structures composed of porous polyaniline (PANi) and PEDOT:PSS. This composite with unique structures and morphological properties has the ability to be utilized as cathode for sodium ion batteries (SIBs). Specifically, the cathode delivers a high reversible capacity of 81.9 mA h g −1 at a current density of 100 mA g −1 and represents outstanding cycle stability. Remarkably, the PANi-PEDOT cathode exhibits a high performance compared with state of the art performance of cathode materials for SIBs, for instance, Na 2 Fe 2 (SO 4 ) 3 , Na 0·6 Cr 0·6 Ti 0·4 O 2 and Na 2 MnP 2 O 7 . Moreover, the kinetics analysis of cyclic voltammetry represents predominant capacitive process, which plays dominant roles in charge storage. These conductive cross-linking networks structures and high stability endow the cathode good electrical conductivity and play important roles in the cycling stability of the Na ion cathode, thus promoting the electrochemical performances of the cathode, offering a great promise in SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Li Zheng,Yajing Zhu
A novel magnesium oxide and poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS) composite modified carbon paste electrode (MgO-PP/CPE) has been fabricated for the sensitive quantification of bisphenol A (BPA). The modified electrode was characterized by scanning electron microscopy (SEM), chronocoulometry and electrochemical impedance spectroscopy (EIS). Compared with MgO/CPE, PP/CPE, and CPE, MgO-PP/CPE exhibited enhanced electrochemical activity toward the oxidation of BPA, which was due to the high surface area of MgO and facile electron transfer ability of PEDOT:PSS. Under the optimum conditions, the linear sweep voltammetric oxidation peak current of BPA was linear with its concentration in the ranges from 1.0 nM to 0.4 µM and 0.4 to 10 µM, with a low detection limit of 0.5 nM (3S/N). The fabricated sensor was successively applied to the quantification of BPA content in water samples.
研究领域:
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Ru Jia,Fugui Xiao,Qiaofang Fu,Ying Wu
BiOI was modified with poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS) to function as an organic hole conductor, thereby accelerating the transfer of light-generated holes. Subsequently, the catalyst was immobilized on ZIF-8 to enhance the contact area between the active sites of the catalyst and the pollutant. The successful preparation of the ZIF-8@BiOI/PEDOT:PSS was confirmed through various characterizations. Compared to pure BiOI, the ZIF-8@BiOI/PEDOT:PSS composite material demonstrates markedly enhanced visible-light-driven photocatalytic activity in the degradation of Rhodamine B (RhB) dye. The ZIF-8@BiOI/PEDOT:PSS composite photocatalyst exhibits a maximum RhB degradation efficiency of 92.64%, with a degradation rate constant (k) approximately 2.9 times higher than that of pure BiOI. Additionally, the ZIF-8@BiOI/PEDOT:PSS also exhibits outstanding photocatalytic performance in the degradation of methylene blue and methyl orange. Moreover, its catalytic activity remains nearly unchanged after five consecutive reuse cycles, demonstrating excellent recyclability. This study presents a novel strategy for improving the photocatalytic performance of such materials.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
催化
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jinglong Huang,Jie Qin,Qiufeng Meng,Lei Wang,Yong Du,Shirley Z. Shen
Due to the component advantages and structural features, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) based inorganic–organic composite films shows huge application potential in various fields. However, there are few reports on the bi-functions of thermoelectric (TE) and electromagnetic interference (EMI) shielding for the PEDOT:PSS-based functional films. Herein, metal–organic frameworks (MOFs)-derived Bi x Se y @C sheets with average size about ∼ 7.32 μm are obtained via the solvothermal reaction and selenization pyrolysis treatment, and then flexible free-standing Bi x Se y @C/PEDOT: PSS (BSCP) composite films are obtained by a feasible vacuum filtration combined with cold pressing treatment, using different contents of Bi x Se y @C content as inorganic component. Micrometer Bi x Se y @C sheets are uniformly dispersed in the PEDOT:PSS matrix constructing bi-functional composite films with unique layered structure. When the MOFs-derived Bi x Se y @C content is 70%, BSCP-70 composite film gets a power factor of 11.23 μW m −1 K −2 at 340 K. Meanwhile, the BSCP-70 composite film reaches the highest average total EMI shielding effectiveness (SE T ) value of 45.0 dB at only 41.9 μm thickness at X-band. Based on multi-physical properties of MOF-derived Bi x Se y @C and PEDOT:PSS, flexible Bi x Se y @C/PEDOT:PSS composite films display good application potentiality in the flexible TE devices and EMI shielding protection.
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
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Meng Zhou,Siying An,Xiaowen Xie,Xiaoyu Luo,Ling Zhu,Zhixin Wu,Shuai Chen
Electronic materials capable of bionic self-healing have received extensive attention in view of the urgent need of extending device life, maintaining operation safety, and reducing renewal costs. Among them, conducting polymers (CPs), especially poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), have become a research hotspot due to their intrinsic and tunable electrical conductivity, macromolecule nature with good processability, good stability, combination ability, etc. Herein, an all-organic PEDOT:PSS/poly(ethylene glycol)/2-amino-4-hydroxy-6-methylpyrimidine-encapsulated polyurethane film with high electrical conductivity, remarkable self-healing ability, excellent mechanical flexibility, and strong water resistance is created by the ingenious design of a multiple hydrogen-bonding strategy. Moreover, the film was fabricated easily from a solvent (water/methanol)-processable dispersion with fast drying and “green” advantages. The film crack can be healed by relatively low-temperature heating at 65 °C for 5 min with recovered smooth surface and electrochromic properties, including high optical contrast (ΔT) values of up to 68.2%, fast oxidation and reduction responses (0.24 and 0.49 s, respectively), and excellent coloration efficiency (246.4 cm2 C–1). The flexible electrochromic device employing this film as an active layer still maintained an ΔT value of more than 47% and can remain above 90% even after 1000 times of operation or mechanical bending. This research will greatly enhance the reliability of PEDOT:PSS-based organic film electronic devices.
研究领域:
材料科学
·
电子材料
·
有机化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 63
·58733-58739
·
IF 3.289
Xuguang Zhang,Jianping Xu,Shaobo Shi,Xueliang Wang,Xiangguo Zhao,Ping Zhou,Zeming Liu,Chang Wang,Lan Li
The ferroelectric-like hysteretic I–V effect was observed in the multilayer film of PMMA/carbon quantum dot (CD)/PEDOT:PSS using ITO and Al metal as the electrodes. The multilayer film exhibited two different resistance states and larger hysteresis window under the electric field compared to the film without CD addition. The influence of additional CD layers on the short circuit current (Isc) and open circuit voltage (Voc) values is related to the interfacial polarization between PMMA and PEDOT:PSS layers. The introduction of a CD layer intensifies interfacial polarization for two dielectric layers, resulting in the larger hysteresis window. An interfacial polarization field E′ increases with the external electric field increasing and reaches a maximum value at the threshold voltage Voc of ±15 V. The switch reliability of the device is operated over 5 × 103 times in a succession of periodic pulses without any performance degradation.
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
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Ge Ren,Jiale Yang,Xuanting Wang,Guangmei Hu,Hua Chen,Qing Fang,Anneng Yang
Organic conductive polymers are driving the development of wearable electronics. However, most of the existing electrodes cannot be used for long-term biopotential monitoring due to their poor adhesion, stretchability, and biocompatibility. Here, a bioelectrode was designed by blending the organic semiconductor, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), with various additives, synergistically enabling its high stretchability, adhesion strength, and reduced interface impedance, which can be used for motion-artifact-tolerant recording of ECG signals with high quality. Then, a wearable and wire-free electrocardiogram (ECG) patch is developed by integrating the electrode with the flexible signal acquisition system, realizing long-term, imperceptible, and high-quality ECG monitoring with a high signal-to-noise ratio (38.85 dB). The patch can also be used for daily monitoring of cardiac diseases and sports training scenarios, which may fill the gap in the imperceptible biopotential monitoring area and would be of great value in the future of mobile health and wearable electronics.
研究领域:
生物医学工程
·
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2024
·
IF 4
Meng Zhou,Xiaowen Xie,Siying An,Ling Zhu,Zhixin Wu,Shuai Chen
Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) has become a hot and excellent candidate material for organic electronics. However, its film applications are limited due to its high accidental scratching or damage brittleness , easy moisture absorption and poor mechanical properties, etc. Herein, a thermo-driven healable waterborne polyurethane (WPU-DA) was introduced into PEDOT:PSS aqueous dispersion by simple mechanical mixing. The film prepared by the uniform mixture with cracks less than 10 μm achieved multiple structural morphology healing under treating at 130 °C for 10 min and then 65 °C for 1 h, and this process had little effect on its original electrical properties. Moreover, the film has good resistance to various solvents, especially water even after 14 days of immersion. The film also has excellent flexibility and electrochromic capability which can maintain stable electrical path even after multiple bending-stretching operations. In addition, the film can realize the synergistic healing of structural morphology and electrochromic properties, and a freeze-drying and redispersion process can reproduce above characteristics, supporting the long-term storage and in-site fabrication of polymer dispersions.
研究领域:
材料科学
·
有机电子学
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Yan Meng,Mahshid Ahmadi,Xiaoyan Wu,Tianfei Xu,Long Xu,Zuhong Xiong,Ping Chen
Compared to organic-inorganic halide perovskites ( e.g. , MAPbBr 3 and FAPbBr 3 ), all-inorganic CsPbBr 3 perovskite has shown to be a more promising candidate for application in light-emitting diodes (LEDs) due to higher photoluminescence quantum efficiency and thermal stability. Yet, the external quantum efficiency (EQE) of polycrystalline (3D) CsPbBr 3 based PeLEDs needs further improvement. The low efficiency was attributed to severe luminescence quenching at PEDOT:PSS (Poly-(3,4-ethylenedioxythiophene):poly(styrenesulfonate))/CsPbBr 3 interface arising from (i) interfacial energy barrier between PEDOT:PSS and CsPbBr 3 layer, (ii) poor crystallization and large pinholes in perovskite film, and (iii) indium tin oxide (ITO) anode etching due to PEDOT:PSS acidity. Therefore, it is necessary to address all these problems simultaneously to reduce the luminescence quenching and to improve device efficiency. Here, we introduce a feasible approach to modify the PEDOT:PSS layer in order to reduce the luminescence quenching at PEDOT:PSS/CsPbBr 3 interface. In this modification, PEDOT:PSS is mixed with a MoO 3 ammonia solution at desired volume ratios. Our studies demonstrate that upon this treatment, not only hole injection and crystallization of perovskite film are improved but also ITO is protected from etching by the acidic nature of PEDOT:PSS. This modification result in a high performance all inorganic CsPbBr 3 LED with a maximum luminance of ∼34420 cd/m 2 and a current efficiency of ∼7.30 cd/A. In addition, our state-of-the-art perovskite LEDs (PeLEDs) exhibit no degradation after 2 h of continuous operation, representing a stable PeLEDs based on one-step solution processed polycrystalline CsPbBr 3 .
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
危险品化学品经营许可证（带存储）