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Influence of triple bonds as π-spacer units in metal-free organic dyes for dye-sensitized solar cells.
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2010 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 114, no 25, 11305-11313 p.Article in journal (Refereed) Published
Abstract [en]

Four metal-free org. sensitizers (TC101-TC104) with triple bonds in π-spacers and 5 ref. dyes (TC, TC105, TPC1, D5, and TH208) without triple bonds were applied in dye-sensitized solar cells to study the influence of triple bonds as π-spacer units on their photoelectrochem. properties and dye-sensitized solar cells (DSCs) performance. The introduction of triple bond could red shift the dye's absorption spectrum due to the enhancement of the π-spacer. However, the spectrum red shift is much less than that of the introduction of double bond because of more electronegativity of triple bond. The incident photon-to-current conversion efficiency reveals that the electron transfer yield (Φ(ν)ET) of DSCs becomes larger with the introduction of triple bond. Electrochem. impedance spectroscopy anal. reveals that the introduction of triple bond almost does not change the electron lifetimes in TiO2 films but decreases the effective diffusion lengths. [on SciFinder(R)]

Place, publisher, year, edition, pages
2010. Vol. 114, no 25, 11305-11313 p.
Keyword [en]
triple bond spacer org dye sensitized solar cell
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-218486DOI: 10.1021/jp102697pOAI: oai:DiVA.org:uu-218486DiVA: diva2:695809
Note

CAPLUS AN 2010:718776(Journal)

Available from: 2014-02-12 Created: 2014-02-12 Last updated: 2017-12-06

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Tian, Haining

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