Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/16584
Title: Newly Synthesised Gadolinium bis-Phthalocyanine Sandwich Complex: Ambipolar Organic Semiconductor
Authors: Barard, S
Kreouzis, T
Cammidge, AN
Cook, MJ
Ray, AK
Keywords: Discotic liquid crystalline;time of flight;drift mobility;Poole-Frankel effect
Issue Date: 2018
Publisher: IOP publishing
Citation: Semiconductor Science and Technology
Abstract: Time of flight (TOF) photocurrent transient studies on 5µm thick solution processed films of novel non-peripherally octa-octyl-substituted liquid crystalline gadolinium bis1,4,8,11,15,18,22,25-octakis(octyl) phthalocyanines (8GdPc2) provide a quantitative analysis of the intrinsic ambipolar charge transport relative to mesomorphic structure of this lanthanide compound. Characteristic liquid crystalline phases of these molecules have been identified from differential scanning calorimetry supported by observation from the UVvisible absorption, showing crystal-columnar mesophase and columnar mesophase-isotropic liquid transitions at 64.2°C and 162°C, respectively. The TOF carrier mobility is found to be structure dependent and highest values of 4.73×10−6m2 /Vs and 1.6×10−6m2 /Vs have been estimated for hole and electron mobilities for hexagonally packed, columnar structures of the spin-coated films. These results are exploitable for development of single molecule based all organic complimentary analogue and digital circuits with tunable field effect performance
URI: http://bura.brunel.ac.uk/handle/2438/16584
ISSN: 1361-6641
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Embargoed Research Papers

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