Electronic transport in self-organizing columnar phases

Irina Shiyanovskaya; Kenneth D. Singer; Virgil Percec; T. K. Bera; Y. Miura; Martin Glodde

doi:10.1117/12.478361

14 July 2003 Electronic transport in self-organizing columnar phases

Irina Shiyanovskaya, Kenneth D. Singer, Virgil Percec, T. K. Bera, Y. Miura, Martin Glodde

Proceedings Volume 4991, Organic Photonic Materials and Devices V; (2003) https://doi.org/10.1117/12.478361
Event: Integrated Optoelectronics Devices, 2003, San Jose, CA, United States

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.

Citation Download Citation

Irina Shiyanovskaya, Kenneth D. Singer, Virgil Percec, T. K. Bera, Y. Miura, and Martin Glodde "Electronic transport in self-organizing columnar phases", Proc. SPIE 4991, Organic Photonic Materials and Devices V, (14 July 2003); https://doi.org/10.1117/12.478361

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