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ACS Appl Mater Interfaces. 2019 Jan 23;11(3):3317-3322. doi: 10.1021/acsami.8b18827. Epub 2019 Jan 8.

Printing Poly( p-phenyleneethynylene) PLEDs.

Author information

1
Organisch-Chemisches Institut , Ruprecht-Karls-University Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany.
2
Institute of Printing Science and Technology , Technische Universität Darmstadt , Magdalenenstraße 2 , 64289 Darmstadt , Germany.
3
InnovationLab GmbH (iL) , Speyerer Straße 4 , 69115 Heidelberg , Germany.
4
Centre for Advanced Materials , Ruprecht-Karls-University Heidelberg , Im Neuenheimer Feld 225 , 69120 Heidelberg , Germany.

Abstract

Gravure printing of functional thin-film layers of side-chain-substituted poly( para-phenyleneethynylene)s (PPEs) is reported. Rheological properties of PPEs in combination with the Hansen solubility model allowed the formulation of enhanced single-component inks. Layer evaluation is performed with reflectometric thin-film recordings in an optical setup for laterally resolved large-area investigation using imaging color reflectometry. An organic light-emitting diode in a simple glass/indium tin oxide/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/PPE/LiF-Al stack was gravure-printed from the improved ink showing excellent luminance (542 cd m-2, U = 11.5 V) for this polymer class.

KEYWORDS:

Hansen solubility parameter; gravure printing; poly(para-phenyleneethynylene); side-chain modification; structure property relationship

PMID:
30525370
DOI:
10.1021/acsami.8b18827

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