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Thin mesoporous polyaniline films manifesting a water-promoted photovoltaic effect

Gospodinova, N, Tomšík, E and Romanova, J (2013) Thin mesoporous polyaniline films manifesting a water-promoted photovoltaic effect Chemical Papers, 67 (8). pp. 972-978.

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Abstract

Photovoltaic cells composed of thin mesoporous polyaniline films sandwiched between an indium-tin oxide anode and aluminium cathode have been fabricated. The cells show an increase in the photo-generated open-circuit voltage (V oc) from 0.2 V to 0.6 V and stable-in-time V oc generation following the addition of water containing highly hydrated ions, e.g. tap water.We explain the waterpromoted photo-voltaic effect by the polarity of the water environment. Theoretical calculations show that increasing the solvent polarity increases the energy of the electronic transition related to the measured V oc. The stable-in-time V oc generation could be explained by the increase in the lifetime of the excitons as well as by their more efficient dissociation in the interpenetrating network of polyaniline and water. The penetration of water into the mesoporous polyaniline films is promoted by the presence of highly hydrated ions. © 2012 Institute of Chemistry, Slovak Academy of Sciences.

Item Type: Article
Authors :
NameEmailORCID
Gospodinova, NUNSPECIFIEDUNSPECIFIED
Tomšík, EUNSPECIFIEDUNSPECIFIED
Romanova, Jj.romanova@surrey.ac.ukUNSPECIFIED
Date : 1 August 2013
Identification Number : https://doi.org/10.2478/s11696-012-0293-5
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:23
Last Modified : 17 May 2017 13:23
URI: http://epubs.surrey.ac.uk/id/eprint/839041

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