Gravure printed flexible small-molecule organic light emitting diodes

Tekoglu, Serpil; Hernandez‐Sosa, Gerardo; Kluge, Edgar; Lemmer, Uli; Mechau, Norman

doi:10.1016/j.orgel.2013.09.027

Cited by 56 publications

(35 citation statements)

References 27 publications

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“…The final printing quality is determined by how these sub-processes are approaching the ideality [12] and this is very important in the case of the optoelectronics and in particular of the OLEDs: any possible defects can generate non-uniform emission or, in the worst case, short circuits due to the pinholes [13,14]. Therefore, the printed layers should be defect-free, uniform and homogeneous with very controlled thicknesses [6][7][8]15]; very low roughness is also a crucial feature since the morphology of the previous printed layers can influence the properties of the successive layers [14]. In order to further improve the quality of the produced layer with the aim to prove it as anode into an OLED, increasing the printing speed was here tried without changing ink (viscosity, solvent) and other process parameters (cells geometry, nip pressure), looking for the optimal conditions of the ink transfer step [12,[15][16][17].…”

Section: Resultsmentioning

confidence: 99%

“…De Girolamo Del Mauro, S. Aprano, M. G. Maglione, C. Minarini printing for the production of the optoelectronics is very limited mainly due to the serious difficulties in the formulation of low viscosity inks able to form layers with suitable characteristics. The few manuscripts on the employment of the gravure printing in the production of OLEDs are typically confined to the deposition of the polymeric Hole Injection Layer (HIL) and/or of the emitting layer [3,4,[6][7][8]. Up to date, the most investigated OLED devices are based on the rigid glass substrate and on the brittle and expensive Indium Tin Oxide (ITO) as transparent electrode [4], while the research is focusing on flexible devices and on the substitution of ITO with other conductive materials.…”

Section: Introductionmentioning

confidence: 99%

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Gravure printed PEDOT:PSS as anode for flexible ITO-free organic light emitting diodes

Montanino¹,

Sico²,

Prontera³

et al. 2017

Express Polym. Lett.

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Abstract. Roll-to-roll gravure printing is considered as potential leading manufacturing technology for flexible, low cost and large area optoelectronics. However, solution processed multilayer organic electronics are still challenging to be produced, especially in the case of electrodes. In this work, the gravure printing technique was successfully employed to realize the highly conductive poly(3,4ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) polymeric anode and tested for the first time in flexible ITO-free (Indium Thin Oxide) organic light emitting diodes (OLEDs). The device performances were found to be similar to those of a reference device containing a spin-coated polymeric anode. A gravure printed dimethyl sulfoxide (DMSO) post-treatment was successfully tried to improve the printed anode characteristics. The obtained results show the way for future development for processing flexible ITO-free devices using the most attractive printing technology for roll-to-roll large area manufacturing.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Gravure printed PEDOT:PSS as anode for flexible ITO-free organic light emitting diodes

Montanino¹,

Sico²,

Prontera³

et al. 2017

Express Polym. Lett.

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“…We have been developing organic materials applicable to printed electronics based on conjugated polymer technology, because we expect the printing process to be essential for cost-competitive mass production of large sized TVs or flexible devices [1, 2]. …”

Section: Introductionmentioning

confidence: 99%

Recent progress of high performance polymer OLED and OPV materials for organic printed electronics

Sekine

Tsubata

Yamada

et al. 2014

Science and Technology of Advanced Materials

292

202

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The development of organic printed electronics has been expanding to a variety of applications and is expected to bring innovations to our future life. Along with this trend, high performance organic materials with cost-efficient fabrication processes and specific features such as thin, light weight, bendable, and low power consumption are required. A variety of organic materials have been investigated in the development of this field. The basic guidelines for material design and the recent progress of polymer-based organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs) are reported.

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“…2). Correspondingly, some of optoelectronic devices using these TFC electrodes exhibit comparable performances to their ITO-based counterparts on rigid glass or flexible plastic substrates [45,70,72,74,75,83,87,88,101,103,[118][119][120]128,129] .…”

Section: Design Of Flexible Electrodesmentioning

confidence: 95%

Thin-film organic semiconductor devices: from flexibility to ultraflexibility

Qian

Zhang

et al. 2016

Sci. China Mater.

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Flexible thin-film organic semiconductor devices have received wide attention due to favorable properties such as light-weight, flexibility, reproducible semiconductor resources, easy tuning of functional properties via molecular tailoring, and low cost large-area solution-procession. Among them, ultraflexible electronics, usually with minimum bending radius of less than 1 mm, are essential for the development of epidermal and bio-implanted electronics, wearable electronics, collapsible and portable electronics, three dimensional (3D) surface compliable electronics, and bionics. This review firstly gives a brief introduction of development from flexible to ultraflexible organic semiconductor electronics, and design of ultraflexible devices, then summarizes the recent advances in ultraflexible thin-film organic semiconductor devices, focusing on organic field effect transistors, organic light-emitting diodes, organic solar cells and organic memory devices.

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Gravure printed flexible small-molecule organic light emitting diodes

Cited by 56 publications

References 27 publications

Gravure printed PEDOT:PSS as anode for flexible ITO-free organic light emitting diodes

Gravure printed PEDOT:PSS as anode for flexible ITO-free organic light emitting diodes

Recent progress of high performance polymer OLED and OPV materials for organic printed electronics

Thin-film organic semiconductor devices: from flexibility to ultraflexibility

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