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Title: Charge transport in phenazine-fused triphenylene discotic mesogens doped with CdS nanowires†
Authors: Shah, Asmita
Duponchel, Benoit
Gowda, Ashwathanarayana
Kumar, Sandeep
+5 Co-Authors
Issue Date: Sep-2020
Publisher: Royal Society of Chemistry
Citation: New Journal of Chemistry, 2020, Vol.44, p14872-14878
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 I–V characteristics were obtained, which obey Ohm's law under a limiting case of the Poole–Frenkel conduction mechanism.
Description: Restricted Access.
ISSN: 1144-0546
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Copyright: 2020 The Royal Society of Chemistry and the Centre National dela Recherche Scientifique
Additional information: Supplementary Information Available
Appears in Collections:Research Papers (SCM)

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