Enhancement of bipolar carrier transport in oligofluorene films through alignment in the liquid crystalline phase
Journal
Applied Physics Letters
Journal Volume
87
Journal Issue
11
Pages
112103
Date Issued
2005-09
Author(s)
Abstract
We investigate the formation of aligned liquid-crystal glasses of an oligofluorene and perform comparative studies of carrier-transport properties of the oligofluorene in both amorphous films and glassy liquid-crystal films. With mesophase-mediated molecular alignment, the bipolar carrier-transport capability of oligofluorene solid films is enhanced by more than an order of magnitude. High bipolar carrier mobilities, up to 2.0× 10-2 cm2 V s for holes and up to 2.3× 10-2 cm2 V s for electrons, are observed in the aligned glassy liquid-crystal films. © 2005 American Institute of Physics.
Other Subjects
Bipolar carrier transport; Bipolar carriers; Carrier-transport capability; Liquid-crystal films; Electrons; Fluorine; Liquid crystals; Oligomers; Thin films; Charge carriers
Type
journal article