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Proceedings Paper

Electronic transport in self-organizing columnar phases
Author(s): Irina Shiyanovskaya; Kenneth D. Singer; Virgil Percec; T. K. Bera; Y. Miura; Martin Glodde
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Paper Abstract

This paper presents measurements of time-of-flight charge carrier mobility and thermal optical polarized microscopy on a new class of columnar liquid crystals (LC) self-organized into hexagonal columnar mesophase self-assembled form functionalized dendrons. We discuss the temperature and electric field-independent high hole mobility of 1-3.5×10-3 cm2/Vs. The anomalous temperature behavior of the mobility is consistent with polaron transport mechanisms. Studies of time-of-flight transients, which reveal evidence for dynamic defects with lifetimes in the range of 10-6 s, are presented as aspects of charge gneeration and recombination kinetics. We demonstrate the enhancement of electron transport in acene-based dendron LCs by dopign wtih TNF-based dendron molecules.

Paper Details

Date Published: 14 July 2003
PDF: 11 pages
Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); doi: 10.1117/12.478361
Show Author Affiliations
Irina Shiyanovskaya, Case Western Reserve Univ. (United States)
Kenneth D. Singer, Case Western Reserve Univ. (United States)
Virgil Percec, Univ. of Pennsylvania (United States)
T. K. Bera, Univ. of Pennsylvania (United States)
Y. Miura, Univ. of Pennsylvania (United States)
Martin Glodde, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 4991:
Organic Photonic Materials and Devices V
James G. Grote; Toshikuni Kaino, Editor(s)

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