Conference Program - LOPE-C 2011

SCIENTIFIC CONF. | WEDNESDAY-JUNE 29, 2011
Track 5
Organic and Carbon-based Materials (04:30 pm - 06:00 pm) | LOCATION HARMONIE E / LEVEL C2
04:30 pm CROSSLINKABLE SEMICONDUCTORS FOR USE IN SOLUTION-PROCESSED ORGANIC LIGHT-EMITTING DIODES
Prof. Klaus Meerholz,
Universität zu Köln , Germany
Organic light emitting diodes (OLEDs) based on electroluminescent conjugated polymers are considered as a promising alternative for display and lighting applications,
mainly due to their better compatibility with low-cost production techniques and large substrates. A challenge is multiple-layer deposition to improve the efficiency of the
devices and, as a result, their lifetime.
We have in the past developed photochemically crosslinkable semiconductors for fabrication of complex multilayer OLED [1] and lithographic RGB-pixelation down to the
micron scale. [2,3] Grey-scale lithographic capability has been demonstrated, allowing the fabrication of multiple cavities with different lengths in a single processing step
and thus permits monolithic integration of multiple OLEDs with different emission wavelengths on a single substrate.[4] By use of nanoporous hole-injection layers improved
outcoupling has been demonstrated.[5] Recently, we demonstrated a surface-initiated crosslinking process with high potentials in printing and 3D-coatings.[6] After curing
the materials feature excellent thermal robustness, allowing to process on top even elevated temperatures (e..g. up to 200C).
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