Effects of degradation on the performance of a triphenylene based liquid crystal organic semiconductor

Nathan J. Dawson; Michael S. Patrick; Kyle Peters; Sanjoy Paul; Brett Ellman; Rachael Matthews; Emily Pentzer; Robert J. Twieg; Kenneth D. Singer

doi:10.1117/12.2187528

1 September 2015 Effects of degradation on the performance of a triphenylene based liquid crystal organic semiconductor

Nathan J. Dawson, Michael S. Patrick, Kyle Peters, Sanjoy Paul, Brett Ellman, Rachael Matthews, Emily Pentzer, Robert J. Twieg, Kenneth D. Singer

Author Affiliations +

Proceedings Volume 9616, Nanophotonics and Macrophotonics for Space Environments IX; 96160B (2015) https://doi.org/10.1117/12.2187528
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

We report on time-of-flight (TOF) hole mobility measurements in an aged discotic columnar liquid crystal, Hexakis(pentyloxy)triphenylene (HAT5). The experimental data was fit to an interfacial trapping model based on Van de Walle’s approximations. The theory accurately reproduces the TOF transients of delayed charge release near the optically excited material/electrode interface. Interfacial trapping appears only in the aged materials, but the bulk mobility is the same as that of the pristine material. We also discuss preliminary results of TOF photocurrent transients of HAT5 exposed to ozone.

Citation Download Citation

Nathan J. Dawson, Michael S. Patrick, Kyle Peters, Sanjoy Paul, Brett Ellman, Rachael Matthews, Emily Pentzer, Robert J. Twieg, and Kenneth D. Singer "Effects of degradation on the performance of a triphenylene based liquid crystal organic semiconductor", Proc. SPIE 9616, Nanophotonics and Macrophotonics for Space Environments IX, 96160B (1 September 2015); https://doi.org/10.1117/12.2187528

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