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Restructuring of Dye Layers in Dye Sensitized Solar Cells: Cooperative Adsorption of N719 and Chenodeoxycholic Acid on Titania
Flinders Univ S Australia, Coll Sci & Engn, Flinders Inst NanoScale Sci & Technol, GPO Box 2100, Adelaide, SA 5001, Australia.;Airlangga Univ, Dept Phys, Kampus C Mulyorejo, Surabaya 60115, Indonesia..
Flinders Univ S Australia, Coll Sci & Engn, Flinders Inst NanoScale Sci & Technol, GPO Box 2100, Adelaide, SA 5001, Australia..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Applied Physical Chemistry.ORCID iD: 0000-0002-0168-2942
Flinders Univ S Australia, Coll Sci & Engn, Flinders Inst NanoScale Sci & Technol, GPO Box 2100, Adelaide, SA 5001, Australia..
2019 (English)In: ACS Applied Energy Materials, ISSN 2574-0962, Vol. 2, no 1, p. 124-130Article in journal (Refereed) Published
Abstract [en]

The effect of the co-adsorbent chenodeoxycholic acid (CDCA) up to a concentration of 20 mM on the adsorption of the dye N719 onto titania has been investigated using neutral impact collision ion scattering spectroscopy. It is shown that the co-adsorption of CDCA changes the adsorption mode of N719 from multilayer toward monolayer. FT-IR spectroscopy shows that the adsorption of CDCA increases with increasing CDCA concentration. In contrast, the amount of N719 adsorbed onto titania shows a minimum at 10 mM CDCA, and the relationship between the amount of CDCA and of N719 adsorbed onto titania depends nonmonotonically on the CDCA concentration. The co-adsorption of CDCA and N719 can be described as cooperative. The effect is observed for both low and high N719 concentrations.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2019. Vol. 2, no 1, p. 124-130
Keywords [en]
dye sensitized solar cells, co-adsorbent, monolayer, multilayer, concentration depth profiles, neutral impact collision ion scattering spectroscopy
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URN: urn:nbn:se:kth:diva-245957DOI: 10.1021/acsaem.8b01864ISI: 000458706900015OAI: oai:DiVA.org:kth-245957DiVA, id: diva2:1296145
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QC 20190314

Available from: 2019-03-14 Created: 2019-03-14 Last updated: 2019-03-14Bibliographically approved

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Kloo, Lars

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