Single-step treatment to improve conductivity of PEDOT:PSS by hydrobromic acid solution for application of transparent electrode

Ali, Muhammad Zeshan; Ishak, Ku Marsilla Ku; Zawawi, Mohamad Adzhar Md; Zulkifli, Zulaikha; Jaafar, Mariatti; Ahmad, Zulkifli

doi:10.1016/j.orgel.2022.106643

Cited by 8 publications

(3 citation statements)

References 35 publications

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“…Graphene is a material with high light transmittance, high electrical conductivity, and excellent flexibility, but its high cost makes it difficult to achieve the large-scale industrial production of graphene FTEs [10,11]. Conductive polymers, especially poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT: PSS), have high transmittance, high mechanical flexibility, and excellent thermal stability in the visible light range [12,13]. Metal nanowires, especially silver nanowires (Ag NWs), are inexpensive to synthesize and have high conductivity, so they are considered some of the most ideal materials for processing FTEs [14,15].…”

Section: Introductionmentioning

confidence: 99%

Flexible Transparent Electrode Based on Ag Nanowires: Ag Nanoparticles Co-Doped System for Organic Light-Emitting Diodes

Wu,

Xing,

Sun

et al. 2024

Materials

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Flexible organic light-emitting diodes (FOLEDs) have promising potential for future wearable applications because of their exceptional mechanical flexibility. Silver nanowire (Ag NW) networks are the most promising candidates to replace indium tin oxide (ITO), which is limited by its poor bendability. In this study, three different methods including methanol impregnation, argon plasma treatment, and ultraviolet radiation were used to reduce the junction resistance of Ag NWs to optimize the flexible transparent electrodes (FTEs); which were prepared using Ag NWs and poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS). Then, the optoelectronic properties of the FTEs were further improved by using a co-doped system of silver nanowires and silver nanoparticles (Ag NPs), the structure of which consisted of PET/Ag NWs: Ag NPs/PEDOT: PSS/DMSO. The largest FOM value of 1.42 × 10−2 ohm−1 and a low sheet resistance value of 13.86 ohm/sq were obtained using the optimized FTEs. The prepared FOLED based on the optimized FTEs had a luminous efficiency of 6.04 cd/A and a maximum EQE of 1.92%, and exhibited no observed decline in efficiency when reaching maximum luminance. After 500 bending tests, the luminance still reached 82% of the original value. It is demonstrated that the FTEs prepared via the co-doped system have excellent optoelectronic properties as well as high mechanical stability.

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Section: Introductionmentioning

confidence: 99%

Flexible Transparent Electrode Based on Ag Nanowires: Ag Nanoparticles Co-Doped System for Organic Light-Emitting Diodes

Wu,

Xing,

Sun

et al. 2024

Materials

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“…Due to the restriction of the rigid PEDOT-conjugated backbone and stronger inter-chain interactions, the generation of cracks during stretching may disrupt the charge transport channel, resulting in limited tensile properties of the pristine PEDOT:PSS films (elongation at break ∼5%). Therefore, it is necessary to promote phase separation to form PEDOT-rich and PSS-rich domains, followed by secondary doping and post-treatment − to enhance the crystallinity of PEDOT regions to form charge transport channels and improve electrical properties, while blending with additives such as elastomers − or plasticizers − to soften PSS regions and provide free volume for chain stretching to eliminate strain energy.…”

Section: Introductionmentioning

confidence: 99%

Highly Conductive Inkjet-Printed PEDOT:PSS Film under Cyclic Stretching

Hou

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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Inkjet-printed conductive polymer PEDOT:PSS films have provided a new developing direction for realizing the stretchable transparent electrodes in optoelectronic devices. However, their conductivity and stretchability are limited as the presence of insulating PSS chains, rigid PEDOT conjugated backbone, and stronger inter-chain interactions in the pristine polymer, respectively. Here, we report a PEDOT:PSS film with preferable electrical and mechanical performances by inkjetprinting the formulated printable ink containing PEDOT:PSS, formamide (FA), D-sorbitol (SOR), sodium dodecyl benzene sulfonate (DBSS), and ethylene glycol (EG). The inkjet-printed uniform PEDOT:PSS film exhibits a high conductivity of 1050 S/ cm and sheet resistance of less than 145 Ω/sq on both rigid and flexible substrates. Moreover, the resistance can remain stable after 200 cycles of stretching at 55% strain. The film also presents good stability during repetitive stretching−releasing cycles. The significantly enhanced conductivity of the film lies on the conformational transition of the backbone by secondary doping and post-treatment with FA as well as removing the excess PSS components after phase separation between PEDOT and PSS. Meanwhile, SOR serves as a plasticizer to break the original hydrogen bonds between PSSH chains and provides larger free volume for polymer chain extension, which gives the PEDOT:PSS film the ability to tolerant cyclic tension. This is one of the optimal performances currently reported for inkjet-printed stretchable PEDOT:PSS films. The inkjet-printed PEDOT:PSS film with high conductivity, stretching properties, as well as good biocompatibility exhibits promising prospects as anodes on optoelectronic devices.

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“…On one hand, intrinsically conductive polymers (ICPs), especially those in the PEDOT family, are considered to be important and good candidate sensing materials [10]. Their unique tunable electrical properties, as well as their advantages of easy synthesis, structural diversity, functionalization, and flexibility, make them versatile in sensor applications.…”

Section: Introductionmentioning

confidence: 99%

PEDOT-Based Chemiresistive and Colorimetric Dual-Mode Sensors for the Detection of Hydrogen Peroxide Vapor

An,

Xie,

Gao

et al. 2023

Csac 2023

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Single-step treatment to improve conductivity of PEDOT:PSS by hydrobromic acid solution for application of transparent electrode

Cited by 8 publications

References 35 publications

Flexible Transparent Electrode Based on Ag Nanowires: Ag Nanoparticles Co-Doped System for Organic Light-Emitting Diodes

Flexible Transparent Electrode Based on Ag Nanowires: Ag Nanoparticles Co-Doped System for Organic Light-Emitting Diodes

Highly Conductive Inkjet-Printed PEDOT:PSS Film under Cyclic Stretching

PEDOT-Based Chemiresistive and Colorimetric Dual-Mode Sensors for the Detection of Hydrogen Peroxide Vapor

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