Author:
Gospodinova Natalia,Tomšík Elena,Romanova Julia
Abstract
AbstractPhotovoltaic 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.
Publisher
Springer Science and Business Media LLC
Subject
Materials Chemistry,Industrial and Manufacturing Engineering,General Chemical Engineering,Biochemistry,General Chemistry
Reference23 articles.
1. Bandgap calculations for conjugated polymers synthmet http dx doi org;Yang;Synthetic Metals,2004
2. Polyanilines : a novel class of conducting polymers Faraday Discussion of the Chemical;MacDiarmid;Society,1989
3. New insight into the redox behavior of polyaniline synthmet http dx doi org;Gospodinova;Synthetic Metals,2011
4. Solvent polarity and dopant effect on the electronic structure of the emeraldine salt of Quantium Chemistry;Romanova;International Journal,2011
5. Stability degradation of polymer solar cells solmat http dx doi org;Jørgensen;Solar Energy Materials and Solar Cells,2008
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