Dresden 2020 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 28: Focus: Exploitation of Anisotropy in Organic Semiconductors I (joint session CPP/HL)

HL 28.6: Vortrag

Dienstag, 17. März 2020, 12:00–12:15, ZEU 222

Infrared organic light-emitting diodes with horizontally oriented carbon nanotube emitters — •Caroline Murawski^1,3, Arko Graf^2,3, Jana Zaumseil², and Malte C. Gather³ — ¹Kurt-Schwabe-Institut Meinsberg — ²Universität Heidelberg — ³University of St Andrews, UK

Semiconducting single-walled carbon nanotubes (SWCNT) have shown great potential as electrodes and transport layers in organic light-emitting diodes (OLEDs) and field-effect transistors. Here, we incorporate polymer-wrapped SWCNTs as emitter into OLEDs and achieve narrowband pure infrared emission between 1000 and 1200 nm. Due to the 1D nature of CNTs, the transition dipoles exhibit strong horizontal orientation, which results in an exceptionally high outcoupling efficiency of 49%.