ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yuanyuan Wang,Dawei Yang,Heng Zhang
Although high-performance quantum-dot light-emitting diodes (QLEDs) have been achieved, their stability is still limited due to the use of unstable PEDOT:PSS as the hole injection layer (HIL). Here, we developed a PEDOT:PSS-free QLED by using a binary PTAA:F4-TCNQ HIL. Because the PTAA, with a highest occupied molecular orbital (HOMO) level of ∼5.20 eV, can facilitate hole injection from ITO to the hole transport layer, and the F4-TCNQ can act as the electron acceptor dopant to improve the hole density and hole mobility of PTAA, the PTAA:F4-TCNQ HIL can exhibit excellent hole injection capability. As a result, the PEDOT:PSS-free QLED can exhibit a high EQE of 24.19% and an impressive brightness of 367,200 cd/m2, which are significantly higher than those of conventional QLEDs. Moreover, due to the improvement of device performance and the removal of PEDOT:PSS, the PEDOT:PSS-free QLED can also exhibit a high T95 operational lifetime of 4206 h at 1000 cd/m2 and an excellent T80 shelf lifetime of 207.41 h at 136400 cd/m2, which are about 1.6- and 3.3-fold those of conventional QLEDs, respectively. We believe that the demonstrated PEDOT:PSS-free QLED, with higher performance and stability, will promote the practical application of QLEDs in displays.
研究领域:
材料科学
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电子工程
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显示技术
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PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Yongqing Zhang,Jiahang Zhou,Lingui Hu,Yunbo Li
Silver nanowires (AgNWs) films are a promising alternative to indium tin oxide (ITO) as transparent conductors, but their adhesion and thermal stability are limited. We prepared a transparent conductive film by bonding PEDOT:PSS with graphene and AgNWs on a hydrophilically treated polyethylene terephthalate (PET) substrate. This improved the film’s thermal stability and reduced resistivity due to enhanced adhesion. The sheet resistance of the flexible AgNWs/GR/PEDOT:PSS composite film decreased to about 20 Ω/sq at approximately 80 % transmittance, with minimal changes after bending tests, indicating good adhesion to PET. The composite film also demonstrated excellent stability under long-term storage and high temperatures (up to 106 °C). Joule heating evaluations revealed an average heating rate of 7.19 °C/s at low bias voltages (6.0–12.0 V), highlighting its potential for flexible transparent heaters in future electric heating devices.
研究领域:
材料科学
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电子工程
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2021
·Vol. 31
·期 11
·4260-4271
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IF 3.543
Zhang Xuan,Wang Tongfei,Li Songjun,Shen Xiaojuan
Abstract In this article, a novel silicon-based electrode was designed with the facile solution methods. With the modification of highly conductive PEDOT:PSS layer on the SiNWs by the spin-coated method (SiNWs-PSS), three-dimensional (3D) porous network polyaniline nanofibers (PANI) film was uniformly electrodeposited on the silicon surface (SiNWs-PSS@PANI). The sheet resistances of the PEDOT:PSS layer with different surfactants as well as the deposition time of the PANI were investigated. After optimization, the fabricated SiNWs-PSS@PANI electrode displayed high capacitance about 301.71 mF cm −2 at the current density of 1 mA cm −2 , which enhanced ~ 29 fold comparing to 10.18 mF cm −2 of electrode without the PEDOT:PSS layer between the SiNWs and PANI (SiNWs@PANI), outperforming most values of the reported silicon-based electrodes. The electrode designed in this paper provides a new idea to fabricate high-performance of silicon-based micro-supercapacitors with the simple and low-temperature method. Graphic Abstract
研究领域:
材料科学
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能源存储
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2018
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IF 3.779
Qiufeng Meng,Kefeng Cai,Yong Du,Lidong Chen
In this work, single-walled carbon nanotube (SWCNT)/PEDOT:PSS coated Te nanorod (PC-Te) composite films were prepared by a simple vacuum assisted filtration method, and H 2 SO 4 treatment was employed to improve the thermoelectric performance of the composite films. The addition of SWCNTs apparently improved the electrical conductivity while reduced the Seebeck coefficient of the composite films, resulting in a reduction of the power factor. After treated with H 2 SO 4 , the electrical conductivity of the composite films was further improved, and the Seebeck coefficient decreased slightly. As a consequence, an optimized power factor of 104 μW/mK 2 (corresponding to the electrical conductivity of 332 S/cm and Seebeck coefficient of 56 μV/K, respectively) was obtained for the sample containing 70 wt% SWCNTs at 300 K. A flexible thermoelectric generator prototype was fabricated to demonstrate the output properties. The open circuit voltage and maximum output power delivered from the prototype were 5.6 mV and 53.6 nW, respectively, at a temperature difference of 44 K.
研究领域:
材料科学
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能源技术
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 15
·12083-12092
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IF 2.779
Shen Hao,Hu Tian,Huang Huaxi,Wu Di,Xia Jianlong
Owing to the merits of solution processable, tunable electrical conductivity, high transparency and so forth, poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) has been one of the most widely used hole transport layers (HTL) in organic solar cells (OSCs), particularly in conventional cell architectures. However, the inherent acid and hygroscopic nature as well as the relatively low conductivity of the as-prepared PEDOT:PSS, seriously attenuated the stability and efficiency of the corresponding devices. To address this issue, in this contribution, the mild organic base imidazole (IM) was introduced as dopant to neutralize the acidity and improve the conductivity of the as-prepared PEDOT:PSS. Using PTB7-Th:PC 71 BM as active layer, the OSCs devices based on imidazole treated PEDOT:PSS (PEDOT:PSS-IM) shows a best of 10.09%, which is much higher than that of the un-treated PEDOT:PSS-based devices. Moreover, the PEDOT:PSS-IM-based devices display much better stability. For comparison, devices using 1-methylimidazole (MIM)-doped PEDOT:PSS as hole transport layer (HTL) has been explored. However, an inferior PCE of 8.97% was obtained. These results indicate that the hydrogen bonding interactions between imidazole and PSS plays vital role in elevating the photovoltaic performance and stability of OSCs. Additionally, PEDOT:PSS-IM also displays enhanced performance in the case of other devices with different active layers, indicating a good university in OSCs.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
SYNTHETIC METALS
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2025
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IF 4.6
Yu Lin,Gen Li,Juan Teng,Haibo Wang,Ximei Liu
As a crucial component of flexible electronic devices, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)-based hydrogels for strain sensors have garnered extensive attention for their potential in the field of wearable sensors due to their inherent conductivity and flexibility. However, challenges such as poor mechanical strength, limited sensitivity, and poor durability have hindered the widespread application of PEDOT:PSS hydrogels in high-performance strain sensors. In this study, we develop a novel PEDOT:PSS-P(HEMA-co-AA) hydrogel that addresses common limitations in hydrogel applications, demonstrating remarkable stretchability, low hysteresis, and reliable conductivity. The hydrogel is synthesized using a semi-interpenetrating polymer network (SIPN) strategy, combining the linear conducting polymer PEDOT:PSS with a chemically cross-linked network based on 2-hydroxyethyl methacrylate (HEMA) and acrylic acid (AA). This hybrid structure notably contributes to the hydrogel's mechanical properties, achieving a stretchability of 195 %, while maintaining a rapid response time of 0.20 seconds and exceptional cyclic stability over 1000 cycles under 100 % strain. Moreover, the hydrogel demonstrates promising strain-sensing capabilities, positioning it as a strong candidate for future applications in wearable electronics and flexible sensors. The adoption of the SIPN strategy, along with the synergistic combination of PEDOT:PSS and P(HEMA-co-AA), paves a new pathway for enhancing the mechanical performance and sensing properties of hydrogels in strain-sensing technologies.
研究领域:
材料科学
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柔性电子
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生物医学工程
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高影响因子
MOLECULES
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2023
·Vol. 28
·期 7
·3262
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IF 4.6
Shuya Xue,Min Shi,Jinye Wang,Jiapeng Li,Guanwei Peng,Jingkun Xu,Yansha Gao,Xuemin Duan,Limin Lu
In this work, TiO2-MXene/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite was utilized as an electrode material for the sensitive electrochemical detection of baicalein. The in-situ growth of TiO2nanoparticles on the surface of MXene nanosheets can effectively prevent their aggregation, thus presenting a significantly large specific surface area and abundant active sites. However, the partial oxidation of MXene after calcination could reduce its conductivity. To address this issue, herein, PEDOT:PSS films were introduced to disperse the TiO2-MXene materials. The uniform and dense films of PEDOT:PSS not only improved the conductivity and dispersion of TiO2-MXene but also enhanced its stability and electrocatalytic activity. With the advantages of a composite material, TiO2-MXene/PEDOT:PSS as an electrode material demonstrated excellent electrochemical sensing ability for baicalein determination, with a wide linear response ranging from 0.007 to 10.0 μM and a lower limit of detection of 2.33 nM. Furthermore, the prepared sensor displayed good repeatability, reproducibility, stability and selectivity, and presented satisfactory results for the determination of baicalein in human urine sample analysis.Keywords:TiO2-MXene;oxygen vacancy;PEDOT:PSS;baicalein;electrochemical sensor
研究领域:
分析化学
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材料科学
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电化学
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PubMed
高影响因子
Nanomaterials
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2024
·Vol. 14
·期 10
·866
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IF 4.4
Guiming Liu,Zhao Huang,Jiujie Xu,Bowen Zhang,Tiesong Lin,Peng He
In the evolving landscape of portable electronics, there is a critical demand for components that meld stretchability with optical transparency, especially in supercapacitors. Traditional materials fall short in harmonizing conductivity, stretchability, transparency, and capacity. Although poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) stands out as an exemplary candidate, further performance enhancements are necessary to meet the demands of practical applications. This study presents an innovative and effective method for enhancing electrochemical properties by homogeneously incorporating Ru(III) into PEDOT:PSS. These Ru(III) PEDOT:PSS complexes are readily synthesized by dipping PEDOT:PSS films in RuCl3solution for no longer than one minute, leveraging the high specific capacitance of Ru(III) while minimizing interference with transmittance. The supercapacitor made with this Ru(III) PEDOT:PSS complex demonstrated an areal capacitance of 1.62 mF cm−2at a transmittance of 73.5%, which was 155% higher than that of the supercapacitor made with PEDOT:PSS under comparable transparency. Notably, the supercapacitor retained 87.8% of its initial capacitance even under 20% tensile strain across 20,000 cycles. This work presents a blueprint for developing stretchable and transparent supercapacitors, marking a significant stride toward next-generation wearable electronics.
研究领域:
材料科学
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电子工程
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PubMed
高影响因子
Polymers
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2023
·Vol. 15
·期 21
·4215
·
IF 5
Guixiang Chen,Zhenhang He,Zhen Liu,Xin Li,Zhengyin Yao,Peng Zhang
Paper-based thermoelectric (PTE) generators have recently emerged as a green technology that can help alleviate environment pollution and the energy crisis. In this work, a PTE generator was prepared by coating a post-treatment-free thermoelectric ink consisting of poly(3,4-ethylenedioxythiophene)/polystyrene sulfonate (PEDOT:PSS) doped with 1-ethyl-3-methylimidazolium:tricyanomethanide (EMIM:TCM) onto the card paper. By tuning the molar concentration of the EMIM:TCM to 0.17 M and with hot-pressing, the PTE generator showed a decent power factor (PF) value of 6.82 μW m−1K−2, which was higher than the values of PTE in the literature. This phenomenon could be attributed to the synergistic effect of high-performance thermoelectric ink (i.e., PF = 175 μW m−1K−2when deposited on glass slide) and the hot-pressing. The hot-pressing enhanced the packing density of cellulose fibers and the associated PEDOT:PSS hybrid, which enabled the formation of long-range conductive paths. In addition, the PTE had good mechanical stability, indicated by no significant change of the power factor values after cyclic folding 10,000 times. Moreover, the structure of as-prepared PTE could be easily tuned into different shapes that are promising for the preparation of flexible wearable thermoelectric generators.Keywords:paper-based thermoelectric;PEDOT:PSS;hierarchical structure;mechanical stability
研究领域:
材料科学
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能源技术
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DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2025
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IF 4.7
Zhenbang Zhang,Fahu Yang,Guangming Li,Jiahong Xiang,Yifan Zhong,Haili Zhao,Tao Chen,Guo Li
The poly-(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS), single-walled carbon nanotubes (SWCNTs), and polyethylene glycol (PEO) were composited and subsequently spin-coated on a Polydimethylsiloxane (PDMS) substrate to prepare a stretchable and flexible bilayer film, and the electrical resistance of the film was adjusted to be unchanged by the pre-stretching processing. The interpenetrating structure was formed within the PEDOT:PSS/SWCNTs/PEO film when the PEO concentration was 5 wt%. The PEDOT:PSS and SWCNTs served as the electric phase forming the conductive path, while the PEO acted as the elastic phase, thereby enabling the film to exhibit stretchability, flexibility, and high conductivity. The pre-stretching processing, which consisted of sequential uniaxial stretching and relaxation, resulted in wrinkling of the PEDOT:PSS/SWCNTs/PEO film due to the stretching strain exceeding the elastic deformation limit. The transmittance changes of the films subjected to the pre-stretching processing also proved that the wrinkles were formed. The film, comprising 5 wt% PEO and 10 wt% SWCNTs, exhibited a minimum sheet resistance of 43 Ω/sq. without pre-stretching and demonstrated stable electrical resistance when subjected to pre-stretching processing with 50% strain. The bilayer film with pre-stretching processing had achieved a comparable level of performance to that of contemporary medical electrodes for electrocardiogram detection. Meanwhile, the bilayer film without pre-stretching could be utilized as a strain sensor for monitoring body motion. Highlights Stretchable and flexible PEDOT:PSS/SWCNTs/PEO films were prepared. The interpenetrating structure of PEDOT:PSS/SWCNTs/PEO films was constructed using scanning electron microscopy and Fourier transfer infrared spectra. Pre-stretching processing could produce wrinkled structure on the surface of the bilayer film. The wrinkled structure makes the film exhibit electrical resistance stability.
研究领域:
材料科学
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生物医学工程
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高影响因子
ENERGY
·
2017
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IF 4.52
Haijun Song,Kefeng Cai
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) functionalized Te (PF-Te) nanorods were in situ synthesized. A simple and efficient vacuum-assisted filtration method was employed to integrate the PF-Te nanorods with PEDOT:PSS to form PEDOT:PSS/PF-Te composite films. By varying the content of PF-Te nanorods, the Seebeck coefficient of the composites increases from 15.6 to 51.6 μV/K, while the electrical conductivity decreases from 1262 to 122.4 S/cm. A maximum power factor of 51.4 μW/mK 2 is obtained from a sample containing 70 wt% PF-Te nanorods at room temperature. An 8 single-leg flexible thermoelectric generator prototype was fabricated using the as-prepared PEDOT:PSS/PF-Te composite film containing 70 wt% PF-Te on a polyimide substrate with Ag electrodes. The prototype produced an output voltage of 2.5 mV at a 13.4 K temperature difference between human body and the environment.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Peng Wang,Yong Wang,Qingbo Xu,Qian Chen,YanYan Zhang,Zhenzhen Xu
Conductive cotton fabrics are widely used in electromagnetic shields and soft sensors because of their excellent softness and comfort. Generally, conductive cotton fabrics are prepared by depositing an inorganic conductive coating or an organic conductive polymer coating on them. However, due to the complex structure of cotton fabrics, these conductive coatings easily fall off and fracture under external forces, resulting in a sharp decline in the conductive properties of the finished fabrics. In the present work, L-cysteine was used as a binder to immobilize Ag NPs on cotton fabric. Ag NPs were covered by PEDOT:PSS to prevent them from falling off and cracking. As a result, the surface resistance of finished fabric was arrived at 8.7 Ω/sq. The finished fabric also exhibited excellent electromagnetic shielding effectiveness, with an electromagnetic shielding reached at 27.1 dB. Moreover, the composite coating significantly improved the durability of electrical conductivity and electromagnetic shielding properties of the finished fabric. In addition, mist polymerization was used to retain the inherent properties of the cotton fabric. We believe that the proposed method provides a new direction for the preparation of conductive cotton fabrics with a high stability.
研究领域:
材料科学
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纺织工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）