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2-(4-Butoxyphenyl)-N-hydroxyacetamide: An Efficient Preadsorber for Dye-Sensitized Solar Cells
Uppsala Univ, Dept Chem, Angstrom Lab, POB 523, S-75120 Uppsala, Sweden.;Univ Mandalay, Dept Phys, Mat Sci Res Lab, Mahaaungmyay Township 100103, Mandalay, Myanmar..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Univ Mandalay, Dept Phys, Mat Sci Res Lab, Mahaaungmyay Township 100103, Mandalay, Myanmar..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.ORCID iD: 0000-0002-8249-1469
2017 (English)In: ACS OMEGA, ISSN 2470-1343, Vol. 2, no 5, p. 1820-1825Article in journal (Refereed) Published
Abstract [en]

The effect of chemical modification of mesoporous TiO2 electrodes by 2-(4-butoxyphenyl)-N-hydroxyacetamide (BPHA) before dye adsorption is investigated in dye-sensitized solar cells (DSCs). Two organic dyes, LEG4 and Dyenamo blue, were used in combination with the cobalt (II/III) tris(bipyridine) redox couple. The photovoltaic performance of the DSCs is clearly enhanced by BPHA. Preadsorption of mesoporous TiO2 electrodes with BPHA lowered the amount of adsorbed dye but improved the shortcircuit current densities and the power conversion efficiencies by 10-20%, while keeping the open-circuit potential essentially unaffected. Notably, BPHA improved the LEG4 performance, whereas it has been reported for this dye that chenodeoxycholic acid as a coadsorbent lowers solar cell efficiency. Faster dye regeneration was found to be one reason for improved performance, but improved electron injection efficiency may also contribute to the favorable effect of BPHA.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2017. Vol. 2, no 5, p. 1820-1825
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Chemical Sciences
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URN: urn:nbn:se:uu:diva-330054DOI: 10.1021/acsomega.7b00267ISI: 000404727800010OAI: oai:DiVA.org:uu-330054DiVA, id: diva2:1157677
Available from: 2017-11-16 Created: 2017-11-16 Last updated: 2017-11-16Bibliographically approved

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