EUROPEAN POLYMER JOURNAL
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2024
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IF 5.8
Chao Li,Zecheng Yang,Jiadeng Zhu,Chunxia Gao,Mingxu Wang,Qiang Gao
Hydrogel is a promising material for wearable electronics due to its good mechanical properties, electrical conductivity and body adaptability. However, subzero freezing and water loss under high temperature or prolonged placement are great challenges for hydrogels. Here, polyacrylic acid / poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PAA/PEDOT: PSS) ionogels were designed by entangling PAA and PEDOT: PSS chains with each other in a binary solvent system of water and ionic liquid (IL) and chemical cross-linking by N, N’ -methylene bisacrylamide (MBA). It has excellent mechanical properties (8.3 kPa, > 500 %), skin-adapted Young's modulus (<10 kPa), high conductivity (8.06 S·m −1 ), and strong adhesion (13.3 kPa). Ionogel has a sensitive response as a sensor (GF = 2.08, 0–200 %; GF = 3.64, 200–400 %; GF = 4.58, 400–510 %). Especially, the freeze-resistance and long-term moisturizing properties make ionogels exhibit long-lasting and robust utility. As a scalable application platform, we demonstrate the potential applications of this novel ionogel as a body-conformable electronic product in a series of conceptual demonstrations, including full range of human motion response, human–machine interaction (HMI), temperature signal detection and TENG device assembly.
研究领域:
材料科学
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生物医学工程
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DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 10
·2469
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IF 3.1
Haoxiang Tao,Guangyao Hu,Shun Lu,Bing Li,Yongxing Zhang,Jie Ru
Ionic electroactive polymer (iEAP) actuators are recognized as exceptional candidates for artificial muscle development, with significant potential applications in bionic robotics, space exploration, and biomedical fields. Here, we developed a new iEAP actuator utilizing high-purity single-walled carbon nanotubes (SWCNTs)-reinforced poly(3, 4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT: PSS, PP) hybrid electrodes and a Nafion/EMIBF4ion-exchange membrane via a straightforward and efficient spray printing technique. The SWCNT/PP actuator exhibits significantly enhanced electric conductivity (262.9 S/cm) and specific capacitance (22.5 mF/cm2), benefitting from the synergistic effect between SWCNTs and PP. These improvements far surpass those observed in activated carbon aerogel bucky-gel-electrode-based actuators. Furthermore, we evaluated the electroactive behaviors of the SWCNT/PP actuator under alternating square-wave voltages (1–3 V) and frequencies (0.01–100 Hz). The results reveal a substantial bending displacement of 6.44 mm and a high bending strain of 0.61% (at 3 V, 0.1 Hz), along with a long operating stability of up to 10,000 cycles (at 2 V, 1 Hz). This study introduces a straightforward and efficient spray printing technique for the successful preparation of iEAP actuators with superior electrochemical and electromechanical properties as intended, which hold promise as artificial muscles in the field of bionic robotics.
研究领域:
材料科学
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生物医学工程
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机器人学
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DOI
PubMed
高影响因子
OPTICAL MATERIALS
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2021
·
IF 3.08
Hao Guo,Tao Chen,Leiming Yu,Anran Chen,Tao Sun,Juan Wang,Chong Wang,Jin Zhang,Yu Yang
n-Si/PEDOT: PSS heterojunction solar cells are expected to be the alternative for photovoltaic technique for the potentially excellent power conversion efficiency and ease of processing. Herein, a multi-walled carbon nanotubes network coated with polydopamine (MWCNTs&PDA) was applied as an interlayer between silicon substrate and PEDOT:PSS film to enhance the performance of Si/PEDOT:PSS heterojunction device in this study. When the film was applied as an interlayer, the average reflectance of the device within the wavelength range 400–1000 nm dropped from 13.6 % to 8.33 %. The enhanced antireflection ability meant more photon-generated carriers were excited. The introduction of PDA reduced the contact angle from 84.5° to 47° on Si surface, and the minority carrier lifetime (τ) was 2.16 times increase. The high charge separation and improved junction effect of MWCNTs&PDA films incorporated between PEDOT:PSS and Si substrate result in advantageous networks of charge carriers, which is confirmed by the excellent open-circuit voltage (V oc ) 637 mV, short-circuit current density (J sc ) J sc 34.76 mA/cm 2 and fill factor (FF) 56.41 %. The power conversion efficiency improved to 12.49 % when the MWCNTs&PDA film was incorporated. The achievements of this study indicated that the MWCNTs coated with polydopamine as an interlayer is a promising material for excellent performance Si/PEDOT:PSS heterojunction solar devices.
研究领域:
材料科学
·
光伏技术
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DOI
高影响因子
ORGANIC ELECTRONICS
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2019
·
IF 3.495
Cheng Chen,Yan-Hua Liu,Ming Zhu,Shi-Qing Zhao,Wen-Wen Xu,Linsen Chen,Wenbin Huang
Electrochromic devices are emerging as a futuristic technology for flexible electronics with the practical application values in energy-saving, displaying and military camouflage, however, the limitations in the optical, electrical and mechanical properties of the existing transparent conducting electrodes (TCEs) appear as a major obstacle for realizing high performance flexible electrochromic devices. In this work, we have proposed and demonstrated a fast-response and bendable polymer poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT: PSS) electrochromic device based on the embedded nickel (Ni) grid electrode. The Ni grid electrode, fabricated though patterned electroplating, has low sheet resistance (~1.3 Ω/sq), high transparency (~80%), excellent mechanical reliability and long-term chemical stability, exhibiting a figure of merit of 1250, surpassing the most existing TCEs. In addition, we have proposed a compact electrochromic architecture with the electrochromic PEDOT: PSS layer and solid polymer electrolyte being sandwiched between two embedded Ni grid electrodes. The device shows a short coloration and bleaching time (~1 s for 90% optical contrast), a high coloration efficiency (325 cm 2 /C) and excellent mechanical reliability (optical contrast retention ~80% after 1000 bending circles), paving a way for high performance flexible electronics.
研究领域:
材料科学
·
电子工程
·
光学
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DOI
高影响因子
Small Methods
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2026
·
IF 8.7
Wanjie Yin,Mengyuan Wei,Qing-Song Jiang,Xiao Yu,Jiawen Tian,Jincheng Xu,Zhihui Wang,Ligang Yuan,Xiao Yang,Tiankai Zhang
Poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) is a widely used hole transport material in tin-lead perovskite solar cells, yet its photoelectric properties require further enhancement. Herein, we develop a rational gradient doping strategy using DL-carnitine hydrochloride (DL-ChCl) to regulate PEDOT: PSS and improve its buried interface with the tin-lead perovskite. The DL-ChCl induces high p-type doping in PEDOT: PSS, resulting in enhanced conductivity and an elevated work function for improved hole extraction via favorable energy level alignment. Simultaneously, the crystallization quality of the tin-lead perovskite is also enhanced by hindering Sn 2+ oxidation, passivating interfacial defects, and preventing the formation of lead iodide. As a result, a champion power conversion efficiency of the inverted tin-lead perovskite solar cell is enhanced from 18.56% to 21.23% with the open-circuit voltage as high as 0.865 V. The stability of the optimized device without encapsulation is also improved, sustaining 90% of its initial efficiency after aging in a nitrogen atmosphere for 1200 h. This work provides an effective gradient doping strategy to engineer the buried interface between PEDOT: PSS and tin-lead perovskite, improving the photovoltaic performance of tin-lead perovskite solar cells.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yuxin Fu,Xiuchen Wang,Gege Hang,Yanan Wang,Zhe Liu
A dual-conductive fiber has been engineered with a continuous “ion-electron” network. • The fiber achieves both a capacitance density of 633 F cm −3 and a strength of 247 ± 18.5 MPa. • The fiber supercapacitor shows a high energy density of 41.1 mWh cm −3 . • Supercapacitors have successfully powered a wristwatch, demonstrating their practicality. The rapid development of wearable electronics has created an urgent need for flexible energy storage devices that combine high energy density with fast charging and discharging capabilities. However, the poor intrinsic ionic transport properties of PEDOT: PSS severely limit the efficiency of charge storage and release. To address this critical challenge, this study constructed a highly efficient “ion-electron” dual-continuous synergistic transport network within one-dimensional fibers by regulating the doping concentration of the ionic liquid (EMIM: TFSI, IL) via a simple wet-spinning process. An appropriate amount of IL significantly induces PEDOT chain stretching and orientation, effectively shielding the PSS insulating regions, while preserving the long-lasting conductive network formed by single-walled carbon nanotubes (SWCNT) and the mechanical structure of the fibers. Experimental results demonstrated that the optimized PEDOT: PSS/SWCNT/IL-30 composite fiber achieved a synergistic improvement of record-high volumetric capacitance (633 F cm −3 at a current density of 3 A cm −3 ) and outstanding mechanical strength (247 ± 18.5 MPa). The fiber supercapacitor assembled from this composite fiber exhibited an ultrahigh volumetric energy density of 41.1 mWh cm −3 at a power density of 239.2 mW cm −3 . It retained 78.6% of its capacitance after 10,000 cycles at 7 A cm −3 , revealing excellent rate capability and cycling stability. Furthermore, the fibers woven into flexible fabric devices could power an electronic watch for nearly 50 min, demonstrating superior practical power-supply capability. By clearly elucidating the concentration–structure–property relationship, this study provides key insights and experimental evidence for the design of high-performance, weavable energy storage electrodes, which is of great significance for advancing the practical application of flexible wearable energy storage systems. This paper proposes a structural design strategy for synergistically constructing a dual-continuous “ion-electron” transport network. The fabricated PEDOT:PSS/SWCNT/IL-30 composite fiber achieves an ultra-high specific capacitance of 633 F cm −3 . The assembled symmetric fiber supercapacitor delivers a power density of 239.2 mW cm −3 at an energy density of 41.1 mWh cm −3 . Download: Download high-res image (147KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yiqian Cui,Yuchen Xiong,Jiawen Wang,Yu Zhang,Wei Yu
The formation of ohmic contact between the carrier transport layer and the electrode is necessary for the high-performance solar cells. However, in the PEDOT: PSS/Si hybrid solar cells, the low conductivity of PEDOT: PSS and the high contact barrier between PEDOT: PSS and Ag electrodes result in high contact resistance, which inhibits the improvement of cell efficiency. In this work, the above two issues were improved simultaneously by simply introducing a MoO X interface layer between PEDOT: PSS and Ag electrodes. The detailed characterization and analytical results show that the quinoid structure of PEDOT: PSS films and the Mo 5 + with metallization electricity properties increased significantly due to the interaction between PEDOT: PSS and MoO X , reducing the resistivity of PEDOT: PSS. At the same time, the contact potential barrier was reduced due to the formation of MoO X /Ag composite electrodes with high work function (WF). In addition, the PEDOT: PSS/MoO X films with higher WF led to a higher built-in electric field. Due to these collaborative improvements, a PEDOT: PSS/Si solar cell with a high power conversion efficiency (PCE) of 15.02 % was achieved. This work provides a new idea to modify the interface between PEDOT: PSS and Ag electrodes for improving the PCE of PEDOT: PSS/Si hybrid solar cells.
研究领域:
材料科学
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能源技术
·
界面工程
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DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2019
·
IF 0.748
PING LIU,JIANGHAO WANG,JIE CHENG,LIMING LIU,HONGHANG WANG,BAOQING ZENG,FENG CHI
A flexible organic light-emitting device (OLED) was produced using copper nanowire (CuNW) film as anode and Graphene oxide (GO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film as anode buffer layer. Compared with other transparent conductive films (TCFs), CuNWs are low cost, easy to fabricate, and compatible with flexible substrates over a large area. Due to these advantages, CuNWs are showing greater and greater promise for the next generation of TCF. Modified by PEDOT:PSS, the conductivity and work function of the CuNW film can be dramatically enhanced. However, PEDOT:PSS is highly acidic and easy to corrode the CuNW film, which will reduce maximum luminous brightness and current efficiency of the OLED. In this paper, GO/PEDOT:PSS was used as anode buffer layer to modify the CuNW anode and the composite transparent electrode exhibited excellent optoelectrical properties. The driving voltage of the OLED with CuNW/PEDOT:PSS is 6.2 V, and the maximum luminous brightness is 2737.2 cd/m 2 . The driving voltage of the OLED with CuNW/GO/PEDOT:PSS anode was reduced to 5.1 V, and the maximum luminous brightness was improved to 3007.4 cd/m 2 .
研究领域:
材料科学
·
光电技术
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DOI
高影响因子
SENSORS
·
2020
·Vol. 20
·期 10
·2781
·
IF 3.275
Xiaoyan Shen,Feng Ju,Guicai Li,Lei Ma
In this work, a smartphone-based electrochemical detection system was designed and developed for rapid and real-time detection of dopamine (DA). The system included a screen-printed electrode (SPE) used as a sensor, a hand-held electrochemical potentiostat and a smart phone with a specially designed app. During the detection period, the SPEs modified with poly(3,4-ethylenedioxythiophene) (PEDOT), chitosan (CS) and graphene (G) were used to convert and amplify the electrochemical reaction signals. The electrochemical potentiostat was used to generate excitation electrical signals and collect the electrical signals converted from the sensor. The smartphone—connected to the detector via Bluetooth-was used to control the detector for tests, further process the uploaded data, and plot graphs in real time. Experimental results showed that the self-designed sensing system could be employed for highly selective detection of DA in the presence of interfering substances such as ascorbic acid (AA) and uric acid (UA). CV was carried out to characterize the electrochemical properties of the modified SPEs and the electrochemical behaviors of DA on the modified SPEs. Finally, according to the analysis of DPV responses of DA, the system could detect DA with a detection sensitivity of 0.52 ± 0.01 μA/μM and a limit of detection of 0.29 μM in the linear range of DA concentrations from 0.05 to 70 μM.Keywords:dopamine;conducting polymer;graphene;smartphone;electrochemical detection
研究领域:
生物医学工程
·
分析化学
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DOI
PubMed
高影响因子
ORGANIC ELECTRONICS
·
2022
·
IF 3.868
Yueqiao Li,Wei Wang,Jie Dong,Yao Lu,Xiaofeng Huang,Yuan Niu,Bo Qiao,Suling Zhao,Zheng Xu,Aliaksandr Smirnov,Dandan Song
Poly(3,4-ethylenedioxy thiophene): poly(styrene sulfonate) (PEDOT: PSS) is a hole transport layer (HTL) that is often employed in a diverse array of optoelectronic devices, such as perovskite solar cells and perovskite light-emitting diodes (PeLEDs). By simply doping lithium fluoride (LiF) into PEDOT: PSS, we demonstrate that the electrical characteristics of the HTL can be modified. Especially in quasi-2D perovskite LEDs, the crystallization process is regulated by LiF modification, leading to reduced phase impurity defects and improved carrier transport in the perovskite emission layer. Therefore, the luminance and efficiency of the quasi-2D PeLEDs are notably enhanced. The optimized PeLED with LiF modification exhibits a peak luminance of 21517 cd m −2 with 317% higher than the standard PeLED; and a high current efficiency of 39.8 cd A −1 with 237% higher than the standard PeLED. Moreover, the device stability is also improved with a nearly doubled half lifetime due to the reduced phase impurities. The work demonstrates a facile yet effective method for altering PEDOT: PSS hole transport layer, emphasizing the critical role of the underneath layer in the crystallization of quasi-2D perovskites.
研究领域:
材料科学
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光电领域
·
能源科学
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Ao Cui,Jiale Yao,Jiang Xu,Rui Wang,Longyun Hao
In this research, PEDOT: PSS/Ag composite was successfully prepared by in-situ oxidation method, and the preparation conditions were optimized by adjusting the amount of APS and PSS . By utilizing FT-IR, XPS, TEM and ζ potential tests, the structure of PEDOT: PSS/Ag composite was characterized. Subsequently, the composite was coated on cotton fabric substrates through ink-jet printing to fabricate conductive coatings. To enhance the adhesion durability of conductive coatings, different dopamine (DA) solutions were further sprayed onto the surface of conductive coatings, and UV irradiation was used to initiate DA polymerization into polydopamine (PDA). For demonstrating the binding performance of PDA, The effects of solution pH, DA concentration and UV irradiation time on the coating durability to wash, friction and light exposure were measured and compared. The results indicated that the good polymerization of PDA on cotton fabric could significantly enhance the durability of conductive coatings to various external stimuli.
研究领域:
材料科学
·
纺织工程
·
表面化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yunzhongze Hu,Minqiang Jiang,Xiaoye Cong,Gongyu Liu,Xiaosu Yi,Xiaoling Liu
In recent years, the demand for efficient and flexible electromagnetic (EMI) shielding has increased dramatically to ensure the stability of electronic devices and protect the body from electromagnetic radiation due to the development of wearable electronics and fifth-generation network communication(5G). Nonwovens made from short-cut recycled carbon fibre have shown potential for use in the EMI shielding area due to their economic and ecological benefits. However, achieving lightweight, high-efficiency, and flexible electromagnetic shielding remains challenging. To address this problem, we constructed a lightweight multifunctional recycled carbon fibre (rCF)/ Ti 3 C 2 T x / Poly (3,4-ethylene dioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) nonwoven fabric with double-layered structure, high electromagnetic shielding efficiency (EMI SE), photothermal effect and good Joule heating performance via simple double vacuum-assisted filtration and hot-pressing strategy. Different sizes of Ti 3 C 2 T x flakes were prepared using improved mild etching, ultrasonic and vortex fluid power-focused delamination (PFD) methods. The rCF/Ti 3 C 2 T x /PEDOT: PSS (MPrCF) nonwoven fabric showed superior conductivity (96.18 S/cm), a favourable EMI shielding efficiency of 63.3 dB, and excellent absolute shielding efficiency of up to 13,900 dB cm 2 *g −1 with only 0.25–0.35 mm thickness due to the unique porous double layered lamination structure and high conductivity. In addition, the new MPrCF veil exhibited superior joule heating and photothermal performance with a saturated temperature of up to 290.2 °C at 5v voltage and 112.3 °C at 300 mW/m 2 light intensity. This new rCF veil shows great potential applications in composite reinforcement fields as a lightweight and scalable electromagnetic shielding material.
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
危险品化学品经营许可证（带存储）