Berlin 2024 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 17: Organic Semiconductors
HL 17.1: Talk
Tuesday, March 19, 2024, 09:30–09:45, EW 015
Charge mobility in polar columnar phases of subphthalocyanine containing liquid crystals — •Ahmad Murad1, Elias Baron1, Martin Feneberg1, Maximilian Baumann2, Matthias Lehmann2, and Alexey Eremin1 — 1Otto-von-guericke-Universität — 2Julius- Maximilians -Universität Würzburg
We report measurements of time-of-flight charge carrier mobility in star-shaped mesogens with subphthalocyanine core that forms self-assembled polar columnar phases. The study investigates the intricate interplay between temperature and electric field dependence on the high mobility of polar columnar phase liquid crystals (PCLCs). We demonstrate that the charge mobility exhibits an anomaleous field dependence decreasing with increasing electric field. PCLCs exhibit unique structural properties characterized by self-assembled columnar arrangements of mesogens with spontaneous polarisation, which make them promising candidates for various electronic and optoelectronic applications.
Keywords: time of flight(TOF); organic semiconductors; Mobility; polar columnar phase; liquid crystals