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Issue 35, 2020
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Charge transport in phenazine-fused triphenylene discotic mesogens doped with CdS nanowires

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Abstract

Herein, we report the synthesis of oleylamine-capped CdS nanowires (NWs) and the dispersion of a small optimized amount of these NWs in the Colh phase of a recently synthesized phenazine-fused-triphenylene discotic liquid crystal (PFT DLC) to understand the temperature-dependent charge transport via the time-of-flight technique. X-ray diffraction study reveals a reduction in core–core separation; however, upon doping CdS NWs, we observed a trivial decrease in hole mobility. For the PFT-DLC and its composite, the hole mobility was found to be in the range of 0.07–0.43 × 10−3 cm2 V−1 s−1 following the inverse-power law as a function of temperature. This could be due to the large size of the CdS NWs, which eventually disturb the Colh packing and hence the charge carrier mobility. Besides, a nanocomposite device consisting of the heterojunction of ITO–PFTDLC/CdS–Au has been constructed and IV characteristics were obtained, which obey Ohm's law under a limiting case of the Poole–Frenkel conduction mechanism.

Graphical abstract: Charge transport in phenazine-fused triphenylene discotic mesogens doped with CdS nanowires

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Supplementary files

Article information


Submitted
30 Jun 2020
Accepted
29 Jul 2020
First published
31 Jul 2020

New J. Chem., 2020,44, 14872-14878
Article type
Paper

Charge transport in phenazine-fused triphenylene discotic mesogens doped with CdS nanowires

A. Shah, B. Duponchel, A. Gowda, S. Kumar, M. Becuwe, C. Davoisne, C. Legrand, R. Douali and D. P. Singh, New J. Chem., 2020, 44, 14872 DOI: 10.1039/D0NJ03290E

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