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2015 | 2 | 1 |
Tytuł artykułu

Impact of photocatalysis on carotenoic acid dye-sensitized solar cells

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Sensitized mesoporous titania is of increasing interest for catalysis and photovoltaic devices such as dye-sensitized solar cells (DSCs). For photovoltaic applications, the catalytic properties of TiO2 can cause degradation of the dyes during device fabrication. This is especially the case if natural sensitizers are used. We addressed this issue by fabrication of carotenoic acid sensitized solar cells under inert and ambient assembly conditions. The DSCs were investigated by currentvoltage and quantum efficiency measurements. Further characterization of the cells was made using impedance spectroscopy. The conversion efficiency of the DSCs prepared under inert conditions improved by at least 25% and the devices showed an enhanced reproducibility. The improvement of the DSCs correlated with the conversion efficiency of the sensitizers under inert conditions. We conclude that the photocatalytic bleaching depends on the electron injection efficiency of the sensitizer. Hence carotenoic acids support their own degradation. However, the photocatalytic decomposition of the sensitizers can be avoided by fabrication of the DSCs under inert conditions.
Wydawca

Czasopismo
Rocznik
Tom
2
Numer
1
Opis fizyczny
Daty
otrzymano
2015-04-22
zaakceptowano
2015-09-04
online
2015-11-19
Twórcy
autor
  • Department of Physics, University
    of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
autor
  • Department of Physics,
    Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
  • Department of Physics, University
    of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
autor
  • DSM Nutritional Products Ltd., Wurmisweg 576, 4303
    Kaiseraugst, Switzerland
autor
  • Department of Physics,
    Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
  • Department of Physics,
    Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
autor
  • Department of Physics, University
    of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
  • Department of Physics, University
    of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_hyma-2015-0003
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