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Hybrid organic/inorganic nanocomposite as a quasi-one-dimensional semiconductor under ambient conditions

J. Appl. Phys. 106, 093701 (2009); doi:10.1063/1.3248342

Published 2 November 2009

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P. Suresh Kumar, Sandeep Kumar, and V. Lakshminarayanan
Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, India
We describe here a novel hybrid organic/inorganic nanocomposite of hexahexyloxytriphenylene (HAT6) which is a columnar discotic liquid crystal and gold tetrachloride, an inorganic dopant, showing enhanced dc and ac electrical conductivity by several orders of magnitude at ambient conditions vis-à-vis the respective pure components. The composites at appropriate concentrations of the dopants retain the columnar hexagonal phase, which is confirmed by polarizing optical microscopy, differential scanning calorimetry, and x-ray scattering techniques. The UV-vis spectral studies show that the composites absorb in the entire visible range due to the formation of radical cations of the discotic molecules, making it a potential candidate for solar cell applications. ©2009 American Institute of Physics
History: Received 22 April 2009; accepted 23 September 2009; published 2 November 2009
Permalink: http://link.aip.org/link/?JAPIAU/106/093701/1

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KEYWORDS and PACS

Keywords
PACS
  • 73.63.-b
    Electronic transport in nanoscale materials and structures
  • 84.60.Jt
    Photoelectric conversion: solar cells and arrays
  • 81.07.Pr
    Organic-inorganic hybrid nanostructures: fabrication and characterization
  • 78.40.-q
    Absorption and reflection spectra: visible and ultraviolet (condensed matter)
  • 72.80.Tm
    Electrical conductivity of composite materials
  • 61.30.-v
    Liquid crystals
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0021-8979 (print)   1089-7550 (online)
Publisher:
AIP is a member of CrossRef AIP

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