Photolithographic patterning of PEDOT:PSS with a silver interlayer and its application in organic light emitting diodes

Ouyang, Shihong; Xie, Yingtao; Zhu, Dong Mei; Xu, Xin; Wang, Dongping; Tan, Te; Fong, Hon Hang

doi:10.1016/j.orgel.2014.05.004

Cited by 36 publications

(26 citation statements)

References 23 publications

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“…However, due to the high solubility of PSS rich nano‐domains in water or other polar solvents, PEDOT:PSS films undergo degradation when exposed to such solvents. This exposure is typically encountered for instance when devices are manufactured via multiple layers deposition and in patterning techniques …”

Section: Introductionmentioning

confidence: 99%

Effect of (3‐glycidyloxypropyl)trimethoxysilane (GOPS) on the electrical properties of PEDOT:PSS films

Håkansson

Han

Wang

et al. 2017

J Polym Sci B Polym Phys

216

246

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Poly(3, doped with poly(styrenesulfonate) (PEDOT:PSS) has been reported as a successful functional material in a broad variety of applications. One of the most important advantages of PEDOT:PSS is its watersolubility, which enables simple and environmental friendly manufacturing processes. Unfortunately, this also implies that pristine PEDOT:PSS films are unsuitable for applications in aqueous environments. To reach stability in polar solvents, (3glycidyloxypropyl)trimethoxysilane (GOPS) is typically used to cross-link PEDOT:PSS. Although this strategy is widely used, its mechanism and effect on PEDOT:PSS performance have not been articulated yet. Here, we present a broad study that provides a better understanding of the effect of GOPS on the electrical and electronic properties of PEDOT:PSS. We show that the GOPS reacts with the sulfonic acid group of the excess PSS, causing a change in the PEDOT:PSS film morphology, while the oxidation level of PEDOT remains unaffected. This is at the origin of the observed conductivity changes.

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Section: Introductionmentioning

confidence: 99%

Effect of (3‐glycidyloxypropyl)trimethoxysilane (GOPS) on the electrical properties of PEDOT:PSS films

Håkansson

Han

Wang

et al. 2017

J Polym Sci B Polym Phys

216

246

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show abstract

“…Once the short channel is defined, the PEDOT:PSS patterning represents another critical step to face for the final device release. In this respect, different approaches have been reported in literature . In this work, a lift‐off based on dimethylsulfoxide (DMSO) was found to be the most cost and time effective process to pattern the polymer.…”

Section: Resultsmentioning

confidence: 99%

Scaling Organic Electrochemical Transistors Down to Nanosized Channels

D’Angelo

Verna

Ballesio

et al. 2019

Small

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The perspective of downscaling organic electrochemical transistors (OECTs) in the nanorange is approached by depositing poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) on electrodes with a nanogap designed and fabricated by electromigration induced break junction (EIBJ) technique. The electrical response of the fabricated devices is obtained by acquiring transfer characteristics in order to clarify the specific main characteristics of OECTs with sub‐micrometer‐sized active channels (nanogap‐OECTs). On the basis of their electrical response to different scan times, the nanogap‐OECT shows a maximum transconductance unaffected upon changing scan times in the time window from 1 s to 100 µs, meaning that fast varying signals can be easily acquired with unchanged amplifying performance. Hence, the scaling down of the channel size to the nanometer scale leads to a geometrical paradigm that minimizes effects on device response due to the cationic diffusion into the polymeric channel. A comprehensive study of these features is carried out by an electrochemical impedance spectroscopy (EIS) study, complemented by a quantitative analysis made by equivalent circuits. The propagation of a redox front into the polymer bulk due to ionic diffusion also known as the “intercalation pseudocapacitance” is identified as a limiting factor for the transduction dynamics.

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“…Here, a thin layer of a noble metal like silver (Ag) was used as an etching mask on PEDOT:PSS films to block the interaction of the materials, and was eventually removed with an acidic etchant without affecting the patterned polymer anodes, as PEDOT:PSS is acid-stable. The OLEDs built on the flexible substrates with PEDOT:PSS anodes patterned via the conventional photolithography demonstrated high performance comparable to that of ITO-based OLEDs [100]. The scheme of this photolithographic method and the device performance are shown in Figure 4.…”

Section: Pedot:pss-based Thin-film Electrodes For Oledsmentioning

confidence: 99%

Rising advancements in the application of PEDOT:PSS as a prosperous transparent and flexible electrode material for solution-processed organic electronics

Huseynova

Kim

Lee

et al. 2019

Journal of Information Display

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An organic conductive polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT: PSS), is an attractive candidate for a low-cost, low-temperature, and solution-processed electrode material for achieving high-performance flexible and stretchable thin-film devices. Unlike most organic materials, this water-soluble conjugated polymer is highly stable against chemical and physical exposure. It exhibits the most superior mechanical flexibility and the highest optical transparency and electrical conductivity among all organic conductors. Therefore, this conductive polymer is among the most promising alternatives to the expensive, rigid, and brittle metal oxide-and even metal-based electrode materials, such as indium tin oxide (ITO) and gold, in the future solutionprocessed electronic devices. Nevertheless, the intrinsic conductivity of PEDOT:PSS is typically below 1 S cm −1 , which is too low for such devices. Fortunately, the material properties of PEDOT:PSS, including its conductivity, are easily tuned by employing a large number of simple approaches. In this paper, the reports on the successful application of PEDOT:PSS to a wide range of solution-processed organic devices, such as organic light-emitting diodes (OLEDs), organic thin-film transistors (OTFTs), and organic photovoltaics (OPVs), are reviewed. The recent progress in the development of highly conductive PEDOT:PSS-based films for electrode applications in the field of organic electronics is the main focus of the discussion herein.

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Photolithographic patterning of PEDOT:PSS with a silver interlayer and its application in organic light emitting diodes

Cited by 36 publications

References 23 publications

Effect of (3‐glycidyloxypropyl)trimethoxysilane (GOPS) on the electrical properties of PEDOT:PSS films

Effect of (3‐glycidyloxypropyl)trimethoxysilane (GOPS) on the electrical properties of PEDOT:PSS films

Scaling Organic Electrochemical Transistors Down to Nanosized Channels

Rising advancements in the application of PEDOT:PSS as a prosperous transparent and flexible electrode material for solution-processed organic electronics

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