Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/20158
Title: Impedance spectroscopic study on hybrid phthalocyanine/lead sulphide nanocomposite film
Authors: Khozaee, Z
Chambrier, I
Sosa Vargas, L
Cammidge, AN
Ray, AK
Keywords: nano composite;discotic;macrocyclic;octahexylphthalocyanine;quantum dots;CBH modeling
Issue Date: 17-Dec-2019
Publisher: World Scientific
Citation: Journal of Porphyrins and Phthalocyanines, 2019, 23 (11-12), pp. 1622 - 1628
Abstract: © 2019 World Scientific Publishing Company. A unique organic/inorganic nanocomposite of non-aggregated lead sulphide (PbS) quantum dots (QDs) dispersed within a spun film of non-peripherally octakis(hexyl)-substituted metal-free phthalocyanine (C6H2Pc) has been prepared at room temperature by a simple and low-cost method. The frequency response of alternating current (AC) conduction in a 130 nm thick C6H2Pc/PbS film sandwiched between the indium-tin-oxide (ITO) and aluminum (Al) electrodes is found to obey the universal power-law. The cryogenic study of AC conduction reveals that the correlated barrier hopping (CBH) model closely fits to the experimental data at temperatures below 240 K. The parameters obtained by fitting the CBH model point out that the hopping process cannot take place directly between neighboring PbS QDs but involves the localized states within the matrix.
URI: http://bura.brunel.ac.uk/handle/2438/20158
DOI: http://dx.doi.org/10.1142/S1088424619502055
ISSN: 1088-4246
http://dx.doi.org/10.1142/S1088424619502055
1099-1409
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