Interfacial modification for heightening the interaction between PEDOT and substrate towards enhanced flexible solid supercapacitor performance

Liu, Yumeng; Murtaza, Imran; Shuja, Ahmed; Meng, Hong

doi:10.1016/j.cej.2019.122326

Cited by 57 publications

(25 citation statements)

References 33 publications

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“…(1) conducting polymers (e.g., poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), polypyrrole (PPy)) [10][11][12]; (2) inorganic nanostructures (e.g., carbon nanotubes, graphene, metal nanowires) [13][14][15][16];…”

Section: Introductionmentioning

confidence: 99%

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

et al. 2020

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Poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) (PEDOT:PSS) water and toluene solutions were investigated in detail, taking into consideration their stability, wettability, transparency, and electrochemical properties, along with change polarity caused by dopant. As dopant, methanol, ethanol, and isopropanol were used with different dipole moments (1.70, 1.69, and 1.66 D) and dielectric constants (33.0, 24.5, and 18.0). Three techniques, i.e., spin coating, doctor blade coating, and spray coating, were employed to created PEDOT:PSS layers on glass, glass/indium tin oxide (ITO), and glass/fluorine-doped tin oxide (FTO) substrates with optimized technical parameters for each used equipment. All used PEDOT:PSS water and toluene solutions demonstrated good wetting properties with angles below 30° for all used surfaces. Values of the energy bandgap (Eg) of PEDOT:PSS investigated by cyclic voltammetry (CV) in solution showed increase energy Eg along with addition of alcohol to the mixture, and they were found in the range of 1.20 eV to 2.85 eV. The opposite tendency was found for the Eg value of the PEDOT:PSS layer created from water solution. The storage effect on PEDOT:PSS layers detected by CV affected only the lowest unoccupied molecular orbital (LUMO) level, thereby causing changes in the energy bandgap. Finally, simple devices were constructed and investigated by infrared (IR) thermographic camera to investigate the surface defects on the created PEDOT:PSS layers. Our study showed that a more stable PEDOT:PSS layer without pin-holes and defects can be obtained from water and toluene solutions with isopropanol via the spin coating technique with an optimal speed of 3000 rpm and time of 90 s.

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Section: Introductionmentioning

confidence: 99%

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

et al. 2020

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“…Among the organic materials, poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is a widely used polymer in optoelectronic devices such as photo‐detectors, light emitting diodes, and photovoltaics . Its numerous advantages include good environmental stability, low band gap, high optical transparency, low redox potential, high work function, water solubility, hole conducting ability, ease of deposition by solution process, and p‐type semiconductor characteristics . Though the superior characteristics of PEDOT:PSS ensures its role as a promising material for replacing inorganic semiconductors in plastic electronics application, PEDOT:PSS thin films possess a drawback due to their lower conductivity compared to indium–tin oxide (ITO) and other conductive polymers.…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of nitric acid and DMSO treated PEDOT:PSS/n‐Si hybrid heterostructures for optoelectronic applications

Anitha

Menon²,

Bhalerao³

et al. 2020

J of Applied Polymer Sci

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Organic/inorganic heterostructures are an emerging and interesting field of research for optoelectronics. In this work, an efficient organic/inorganic hybrid heterojunction between PEDOT:PSS and n-type Silicon has been fabricated for optoelectronic applications. Samples with varying thickness of PEDOT:PSS were prepared by spin coating technique and the electrical conductivity of organic layers was modified using DMSO as additive. Post fabrication, the hybrid heterostructures were treated with HNO 3 vapor so as to enhance the conductivity of the organic layer. Surface treatment with HNO 3 was found to lower the roughness of the organic layer and enhance the transparency of the layer. I-V characteristics reveal optimized behavior of HNO 3 treated PEDOT:PSS layer with a low Ideality factor (n~3.2) and a barrier height (Φ B ) of 0.8 eV. The findings of the study provide a promising efficient method to enhance the electrical and device properties of PEDOT:PSS/n-Si heterostructures for optoelectronic applications.

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“…Therefore, it is urgent to develop effective and reliable devices for energy storage [ 8 , 9 ]. As a new type of storage device, supercapacitors have gained great attention in recent years thanks to their advantages of fast charge/discharge rate, high power density, and very long cycle life [ 10 , 11 , 12 , 13 , 14 ]. Supercapacitors have great potential in the area of portable electronic equipment, renewable energy systems, and hybrid power cars [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

et al. 2021

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In the past decades, the energy consumption of nonrenewable fossil fuels has been increasing, which severely threatens human life. Thus, it is very urgent to develop renewable and reliable energy storage devices with features of environmental harmlessness and low cost. High power density, excellent cycle stability, and a fast charge/discharge process make supercapacitors a promising energy device. However, the energy density of supercapacitors is still less than that of ordinary batteries. As is known to all, the electrochemical performance of supercapacitors is largely dependent on electrode materials. In this review, we firstly introduced six typical transition metal oxides (TMOs) for supercapacitor electrodes, including RuO2, Co3O4, MnO2, ZnO, XCo2O4 (X = Mn, Cu, Ni), and AMoO4 (A = Co, Mn, Ni, Zn). Secondly, the problems of these TMOs in practical application are presented and the corresponding feasible solutions are clarified. Then, we summarize the latest developments of the six TMOs for supercapacitor electrodes. Finally, we discuss the developing trend of supercapacitors and give some recommendations for the future of supercapacitors.

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Interfacial modification for heightening the interaction between PEDOT and substrate towards enhanced flexible solid supercapacitor performance

Cited by 57 publications

References 33 publications

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

PEDOT:PSS in Water and Toluene for Organic Devices—Technical Approach

Electrical properties of nitric acid and DMSO treated PEDOT:PSS/n‐Si hybrid heterostructures for optoelectronic applications

Transition Metal Oxide Electrode Materials for Supercapacitors: A Review of Recent Developments

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