Abstract
By photochemically cross linking the molecules of a reactive end group functionalized calamitic liquid crystal (bis(heptylphenyl)-bithiophene-oxetane) in the smectic mesophase, an insoluble rigid molecular network is formed which remains structurally unchanged on cooling to room temperature. The charge transport is investigated by the time-of-flight method and the resulting material shows long-range (∼10 μm) ambipolar transport with nondispersive field independent hole mobility, μhole =0.016 cm2 V s and dispersive field dependent electron mobility, typically μelectron =0.028 cm2 V s (both at 4× 104 V cm-1 and at 15 °C). These desirable charge transport properties make this system a promising candidate for organic electronic applications, such as charge transport layers in organic light-emitting diodes and field effect transistors.
Original language | English (US) |
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Article number | 172110 |
Pages (from-to) | 1-3 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 87 |
Issue number | 17 |
DOIs | |
State | Published - Oct 24 2005 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)