Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Efficient Organic Dye-Sensitized Solar Cells: Molecular Engineering of Donor-Acceptor-Acceptor cationic dyes
Show others and affiliations
2013 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 6, no 12, 2322-2329 p.Article in journal (Refereed) Published
Abstract [en]

Three metal-free donor-acceptor-acceptor sensitizers with ionized pyridine and a reference dye were synthesized, and a detailed investigation of the relationship between the dye structure and the photophysical and photoelectrochemical properties and the performance of dye-sensitized solar cells (DSSCs) is described. The ionization of pyridine results in a red shift of the absorption spectrum in comparison to that of the reference dye. This is mainly attributable to the ionization of pyridine increasing the electron-withdrawing ability of the total acceptor part. Incorporation of the strong electron-withdrawing units of pyridinium and cyano acrylic acid gives rise to optimized energy levels, resulting in a large response range of wavelengths. When attached to TiO2 film, the conduction band of TiO2 is negatively shifted to a different extent depending on the dye. This is attributed to the electron recombination rate between the TiO2 film and the electrolyte being efficiently suppressed by the introduction of long alkyl chains and thiophene units. DSSCs assembled using these dyes show efficiencies as high as 8.8%.

Place, publisher, year, edition, pages
2013. Vol. 6, no 12, 2322-2329 p.
Keyword [en]
dyes, pyridinium, solar cells, sensitizers, structure-property relationship
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-139514DOI: 10.1002/cssc.201300481ISI: 000328218400019Scopus ID: 2-s2.0-84890509623OAI: oai:DiVA.org:kth-139514DiVA: diva2:687522
Funder
Swedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20140114

Available from: 2014-01-14 Created: 2014-01-14 Last updated: 2017-12-06Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Sun, Licheng

Search in DiVA

By author/editor
Sun, Licheng
By organisation
Organic ChemistryCentre of Molecular Devices, CMD
In the same journal
ChemSusChem
Chemical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 47 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf