Photo-Patternable Hole-Transport Polymers for Organic Light-Emitting Diodes

Photo-Patternable Hole-Transport Polymers for Organic Light-Emitting Diodes

A series of soluble arylamine-based hole transporting polymers with various ionization potentials have been synthesized. The synthetic methodology allows for substitution of aryl groups on the amine with electron-withdrawing and electron-donating moieties which permits tuning of the redox potential...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry of materials Vol. 15; no. 7; pp. 1491 - 1496
Main Authors: Domercq, Benoit, Hreha, Richard D, Zhang, Ya-Dong, Larribeau, Nathalie, Haddock, Joshua N, Schultz, Christopher, Marder, Seth R, Kippelen, Bernard
Format: Journal Article
Language:English
Published: Washington, DC American Chemical Society 08-04-2003
Subjects:
Applied sciences
Crosslinking and degradation
Electronics
Exact sciences and technology
Optoelectronic devices
Physicochemistry of polymers
Polymers and radiations
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Patterning
Photochemical crosslinking
Voltage current curve
Use
Experimental study
Quantum yield
Light emitting diode
Crosslinked copolymer
Light sensitive copolymer
Methacrylate copolymer
Photolithography
Amine copolymer
Cinnamic derivative copolymer
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A series of soluble arylamine-based hole transporting polymers with various ionization potentials have been synthesized. The synthetic methodology allows for substitution of aryl groups on the amine with electron-withdrawing and electron-donating moieties which permits tuning of the redox potential of the polymer. The arylamine-based monomers have been copolymerized with cinnamate-based moieties to obtain photo-cross-linkable polymers. These materials can be cross-linked and patterned using a standard mask aligner designed for photolithographic applications. UV cross-linking conditions were optimized to obtain an insoluble hole-transport layer with stable electroluminescent properties. Using a photolithographic mask, these materials have been patterned into 10−50-μm-size features. These polymers have been used as hole-transport layers (HTLs) in multilayer light-emitting diodes ITO/HTL/AlQ3/Mg:Ag [ITO = indium tin oxide, AlQ3 = tris(8-hydroxyquinolinato)aluminum]. The electroluminescent properties have been evaluated and compared between devices made from polymers with different ionization potentials. Electroluminescent devices have been fabricated using a multilayered structure of spin-coated hole-transport materials to enhance the overall electroluminescent properties. Fully spin-coated devices have also been fabricated by spinning a blend of polystyrene and AlQ3 on top of a cross-linked hole-transport layer.
Bibliography:istex:13056B4A3B776F4CE7681DC7EBE758865A2337A7
ark:/67375/TPS-N4HCM09B-B
ISSN:0897-4756
1520-5002
DOI:10.1021/cm020862u