A one-step roll-to-roll process of stable AgNW/PEDOT:PSS solution using imidazole as a mild base for highly conductive and transparent films: optimizations and mechanisms

Kim, Seyul; Kim, So Yeon; Chung, Moon Hyun; Kim, Jeonghun; Kim, Jung Hyun

doi:10.1039/c5tc00801h

Cited by 80 publications

(62 citation statements)

References 41 publications

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“…In addition to a single layer of AgNWs, formation of hybrid structures with PEDOT:PSS, graphene, and CNTs utilizing R2R slot die coating has also been demonstrated for large‐area applications . To improve electrical conductivity of the printed film, PEDOT:PSS conductive polymer inks were modified by adding AgNWs in solid contents of 10–20 wt% .…”

Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

358

347

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PE has been explored for the manufacturing of flexible and stretchable electronic devices by printing functional inks containing soluble or dispersed materials, [14][15][16] which has enabled a wide variety of applications, such as transparent conductive films (TCFs), flexible energy harvesting and storage, thin film transistors (TFTs), electroluminescent devices, and wearable sensors. [17][18][19][20][21][22][23][24] The global PE market should reach $26.6 billion by 2022 from $14.0 billion in 2017 at a compound annual growth rate of 13.6%. [25] PE devices are manufactured by a variety of printing technologies. Typical printing technologies can be divided into two broad categories: noncontact patterning (or nozzle-based patterning) and contact-based patterning. The noncontact techniques include inkjet printing, electrohydrodynamic (EHD) printing, aerosol jet printing, and slot die coating, while screen printing, gravure printing, and flexographic printing are examples of the contact techniques. Each of these techniques has its own advantages and disadvantages, but they all rely on the principle of transferring inks to a substrate. Understanding the characteristics and recent advances of each printing technique is important to further the progress in PE. Moreover, to promote the lab-scale printing technologies to large-scale production process, roll-toroll (R2R) printing, which is one of the manufacturing methods to obtain large-area films with low cost and excellent durability, has drawn much attention from both industry and the research community.Nearly all of devices based on PE require conductive structures, interconnects, and contacts; therefore, highly conductive patterns, usually with high transparency and/or high resolution, fabricated by means of printing conductive materials are one of the most critical components in PE devices. Various printable conductive nanomaterials, such as metal nanomaterials (e.g., metal nanoparticles and metal nanowires) and carbon nanomaterials (e.g., graphene and carbon nanotubes (CNTs)), have been explored and used as major materials for PE. Applying printing technology to deposition of the conductive nanomaterials requires formulation of suitable inks. After depositing inks on different substrates, post-printing treatment, Printed electronics is attracting a great deal of attention in both research and commercialization as it enables fabrication of large-scale, low-cost electronic devices on a variety of substrates. Printed electronics plays a critical role infacilitating widespread flexible electronics and more recently stretchable electronics. Conductive nanomaterials, such as metal nanoparticles and nanowires, carbon nanotubes, and graphene, are promising building blocks for printed electronics. Nanomaterial-based printing technologies, formulation of printable inks, post-printing treatment, and integration of functional devices have progressed substantially in the recent years. This review summarizes basic principles and recent development of common printing technologie...

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Section: Printing Conductive Nanomaterials Inksmentioning

confidence: 99%

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Huang

Zhu

2019

Adv Materials Technologies

358

347

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“…This might be attributable to the fact that these materials tend to give significantly better TCM performances than can typically be achieved with conductive polymer, graphene, or nanotube coatings, rivaling ITO on polymer substrates. R2R gravure printing of silver nanowire dispersions has been employed by a number of groups to produce conductive transparent films with reasonable (75 Ω sq −1 at more than 90% transmission) to excellent (5 Ω sq −1 at 92% transmission) properties, at coating speeds ranging from extremely slow (0.02 m min −1 ) to rather fast (10 m min −1 ; Figure ) . In some cases, PEDOT:PSS was mixed with the nanowires to further improve the sheet resistance.…”

Section: Printing and Coating Of Transparent Conductorsmentioning

confidence: 99%

Roll‐to‐Roll Fabrication of Solution Processed Electronics

Abbel¹,

2018

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The production of electronic devices using solution based ("wet") deposition technologies has some decisive technical and commercial advantages compared to competing approaches like vacuum based ("dry") manufacturing. Particularly, the potential to scale up production processes to large areas and high volumes by introducing continuous roll-to-roll (R2R) methods on flexible substrates has been the topic of intense studies from both applied research institutes and industry already for some years. Decisive steps forward have been achieved during that time, resulting in the dawn of commercial applications for a number of processes, while additional development work is still needed in some other fields. This review summarizes the work published during the last few years on the R2R printing and wet coating of electronic devices. An overview is presented of the basic operational principles for the most commonly used R2R printing and coating methods and techniques for proper web handling in R2R lines. Then, the most commonly used types of flexible substrate materials are introduced, followed by a review of the work published in the application areas of transparent conductor materials, printed electric connections, light emitting devices, photovoltaic energy generation, printed logic, and sensing.

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“…Imidazole and its derivatives, which are weak bases, have been suggested as alternative neutralizing agents that can enhance the stability of PEDOT:PSS with minimal loss of electrical conductivity . Although the electrical conductivity of PEDOT:PSS film showed gradual decrease when pH increased as the film was treated with imidazole or its derivatives, the reduction was not significant; this method achieved the highest electrical conductivity (685.2 S cm –1 ) among pH‐neutral PEDOT:PSS films reported to date …”

Section: Materials Engineering Of Conducting Polymer‐based Anode Buffementioning

confidence: 96%

“…Guanidine has also been used to develop pH‐neutral PEDOT:PSS . Guanidine is a strong base: it produces OH – in water by forming NH 3 + and NH 2 + , then the OH – neutralizes H + (Figure a) .…”

Section: Materials Engineering Of Conducting Polymer‐based Anode Buffementioning

confidence: 99%

Conducting Polymers as Anode Buffer Materials in Organic and Perovskite Optoelectronics

Ahn

Jeong

Han

et al. 2016

Advanced Optical Materials

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This review focuses on the importance and the key functions of anode interfacial layers based on conducting polymers in organic and organic–inorganic hybrid perovskite optoelectronics. Insertion of a buffer layer between electrode and semiconducting layers is the most common and effective way to control interfacial properties and eventually improve device characteristics, such as luminous efficiency in light‐emitting diodes and power conversion efficiency in solar cells. Conducting polymers are considered as one of the most promising materials for future organic and organic–inorganic hybrid electronics because of advantages such as a simple film‐forming process and ease of tailoring electrical and physical properties; as a result, using these polymers is compatible with the production of large‐area, low‐cost, and solution‐processed flexible optoelectronic devices. This review introduces the limitations of anode buffer layers based on conducting polymers and then we will provide recent research trends of material engineering to overcome these problems.

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A one-step roll-to-roll process of stable AgNW/PEDOT:PSS solution using imidazole as a mild base for highly conductive and transparent films: optimizations and mechanisms

Cited by 80 publications

References 41 publications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Printing Conductive Nanomaterials for Flexible and Stretchable Electronics: A Review of Materials, Processes, and Applications

Roll‐to‐Roll Fabrication of Solution Processed Electronics

Conducting Polymers as Anode Buffer Materials in Organic and Perovskite Optoelectronics

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