Ablation of PEDOT/PSS with excimer lasers for micro structuring of organic electronic devices

Schaefer, Moritz; Holtkamp, Jens; Gillner, Arnold

doi:10.1016/j.synthmet.2011.03.014

Cited by 21 publications

(7 citation statements)

References 30 publications

(29 reference statements)

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“…Material modification by laser irradiation e.g. by tuning the conductivity [13] is also under development and can be directly transferred into R2R-production.…”

Section: Resultsmentioning

confidence: 99%

Selective laser patterning in organic solar cells

2014

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Selective laser patterning for integrative serious connection has been industrially established in inorganic thin film solar cells based on glass substrates since a few years. In organic solar cells (OSC) the used materials significantly differ in terms of their patterning behavior. Due to their processability by wet chemical methods inverted architectures are often preferred in organic solar cells which allow the patterning by ultrashort laser pulses in substrate and superstrate configuration. Starting with an introduction of the ablation mechanisms taking place in OSC thin films, an overview of the current state-of-the-art in laser patterning of organic solar cells is presented. Besides progress in research also current achievements in industrial applications are illustrated.

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“…Material modification by laser irradiation e.g. by tuning the conductivity [13] is also under development and can be directly transferred into R2R-production.…”

Section: Resultsmentioning

confidence: 99%

Selective laser patterning in organic solar cells

2014

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“…This allows the patterning of a large area with a single pulse. A schematic drawing of the mask projection setup is depicted elsewhere [6]. At higher wavelengths (λ= 355 nm, 532 nm, 1030 nm, 1064 nm), solid state lasers with pulse lengths from 10 picoseconds to 40 nanoseconds are used.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the influence of laser radiation on material properties of transparent conductive layers

et al. 2012

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Organic electronic devices like organic thin film transistors with micron or even sub-micron sized features can be fabricated at high throughput by fast printing methods combined with high resolution laser patterning. In addition, such an approach is of interest for applications with lower requirements in resolution, such as OLEDs or OPV. Due to its high flexibility and adaptability to almost any material or material system, laser processing is a perfect tool for the production of organic electronics. In all the applications above, it is of severe importance not to cause damage to adjacent material or layers by laser radiation. For transparent conductive layers laser-induced damage can lead to changes in conductivity, transparency or material composition (e.g. oxidation). Therefore, a comprehensive study was performed to investigate the influence of laser radiation below ablation threshold on material properties of transparent conducting layers (e.g. ITO, PEDOT/PSS). Samples were irradiated by a large range of wavelengths, reaching from the deep UV (193 nm) up to near IR (1064 nm). To identify changes in material properties the samples were characterized by microscopic methods like high resolution laser scanning microscopy and conductive atomic force microscopy. Also spectroscopic methods like UV/VIS/NIR absorption spectroscopy as well as X-ray photoelectron spectroscopy were used in order to determine changes in conductivity and material composition

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“…TP and PET showed comparable effective absorption coefficient of approximately 1 × 5 cm -1 in some cases. The ablation thresholds were again calculated for TP and PET, with obviously a very low energy fluence of approximately 40 mJ/cm 2 compared to the other polymers [17][18][19][20][21][22].…”

Section: Photodegradable Polymersmentioning

confidence: 99%

Non-contact Laser Printing of Ag Nanowire-based Electrode with Photodegradable Polymers

Araki

Toonder

Suganuma

et al. 2019

J. Photopol. Sci. Technol.

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The roll-to-roll process is synonymous with newspaper production. If a similar highthroughput process is developed to fabricate electronics over large areas, it would revolutionize the printed electronics manufacturing process. Rapid fabrication of electrode, including patterning and nanoscale welding, is a necessary integration technique to reduce the duration of the process, but faces difficulties in being realized using conventional methods. This paper discusses material factors that affect printability, in the context of developing a promising fabrication technique called laser induced forward transfer (LIFT); LIFT is noncontact printing technique applied previously to realize simultaneous pattern deposition and nanowelding of Ag nanowire (AgNW)-based electrodes. A photodegradable polymer, which is a key component in the printing process to render droplet acceleration, is investigated with regards to its mechanical and optical properties. Furthermore, the printing process of the AgNW-based electrode is visualized, resulting in deeper understanding of LIFT. Knowledge of these factors will contribute to rapid and precise patterning of AgNW-based electrodes with high stretchability and transparency toward flexible optoelectronics devices.

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Ablation of PEDOT/PSS with excimer lasers for micro structuring of organic electronic devices

Cited by 21 publications

References 30 publications

Selective laser patterning in organic solar cells

Selective laser patterning in organic solar cells

Investigation of the influence of laser radiation on material properties of transparent conductive layers

Non-contact Laser Printing of Ag Nanowire-based Electrode with Photodegradable Polymers

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