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Anisotropic ambipolar carrier transport and high bipolar mobilities up to in aligned liquid-crystal glass films of oligofluorene
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10.1063/1.2801360
/content/aip/journal/apl/91/16/10.1063/1.2801360
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2801360
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The schematic illustrations of three sample configurations for TOF studies of E4: the amorphous film, the homogeneously (horizontally) aligned LC glass film, and the homeotropically (vertically) aligned LC glass film.

Image of FIG. 2.
FIG. 2.

(a) Photo of a micrometer thick E4 sample (sandwiched between two glass/polyimide slides) taken under the polarized microscope when right heated to . (b) Photo of the vertically aligned LC cell of E4 taken under the polarized microscope at . (c) Photo of the sample in (b) taken after rapidly cooling to room temperature.

Image of FIG. 3.
FIG. 3.

The transmission (measured with the He–Ne laser, ) of the vertically aligned E4 cell sandwiched between two crossed polarizers as a function of the in-plane rotation angle. Insets: the molecular structure of E4.

Image of FIG. 4.
FIG. 4.

Representative TOF transients for the vertically aligned E4 sample : (a) hole, and (b) electron, . The insets of (a) and (b) are double logarithmic plots of (a) and (b), respectively.

Image of FIG. 5.
FIG. 5.

(a) Hole mobilities and (b) electron mobilities vs for E4 in the amorphous state, the homogeneously aligned LC glass state, and in the homeotropically aligned LC glass state.

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/content/aip/journal/apl/91/16/10.1063/1.2801360
2007-10-17
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anisotropic ambipolar carrier transport and high bipolar mobilities up to 0.1cm2V−1s−1 in aligned liquid-crystal glass films of oligofluorene
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/16/10.1063/1.2801360
10.1063/1.2801360
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