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2. Photo-patterning of Highly Efficient State-of-the-Art Phosphorescent OLEDs Using Orthogonal Hydrofluoroethers

Author

Simone Hofmann, Simonas Krotkus, Malte C. Gather, Daniel Kasemann, Karl Leo, Alex Zakhidov, Fabian Ventsch, University of St Andrews. School of Physics and Astronomy, and University of St Andrews. Biomedical Sciences Research Complex

Subjects
Free state, Materials science, Phosphorescent oleds, Hydrofluoroethers, Doped organic layers, Nanotechnology, European Social Fund, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, QC Physics, Orthogonal photolighography, State (computer science), Phosphorescent OLEDs, QC
Abstract

The authors kindly acknowledge the financial support by the Free State of Saxony, the Sächsische Aufbaubank (SAB, Project Nr. 100087862), and the European Social Fund (ESF). Photolithography offers a scalable solution for large area pixel patterning of organic light-emitting diode (OLED) displays. It has been limited due to the incompatibility of traditional processing steps with the majority of organic materials. In this work, photolithographic structuring of state-of-the-art phosphorescent red p-i-n OLEDs is demonstrated using fluorinated polymers in combination with hydrofluoroether solvents. This is the first report on photolithographically patterned OLEDs with state-of-the-art efficiency and good long-term stability. Postprint

Published
2014

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