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Photo Degradation in Dye-Sensitized Solar Cells

Abodunrin, T.J and Akinyemi, M. L. and Boyo, A. O. and OLUGBUYIRO, J.A.O (2015) Photo Degradation in Dye-Sensitized Solar Cells. Mechanics, Materials Science & Engineering, 1 (1). pp. 36-47. ISSN 2412-5954

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Mesoporous TiO2 of 20nm diameter is prepared in-tandem with organic dyes and based on Fluorine – doped SnO2 (FTO), conducting base is produced by hydrothermal process. The prepared mesoporous Cola Acuminata (C.acuminata), Lupinus Arboreus (L.arboreus) and Bougainvillea Spectabilis (B.spectabilis) films (0.16 cm2) are applied; individually and in combination as interfacial layer in-between nanocrystalline TiO2 (NC- TiO2) and the FTO anode in the dye-sensitized solar cell (DSSC). Absorbance index (A.I) of all three dyes was studied within wavelength range 200-900 nm for a period of 11 months, equivalent to 352 sun exposure. C.acuminata had A.I value 4.00 that decreased to 2.32 under exposure to AM1.5 global conditions. B.spectabilis A.I was 1.19 but decreased to 0.520 within same period of study. Combination of C.acuminata and B.spectabilis gave A.I value 1.40, dye cocktails of C.acuminata, B.spectabilis and L.arboreus gave 2.00 A.I value for same wavelength range. A UV/Vis photo spectrometer was used to determine the prominent peaks and absorbance at such wavelengths. This exponential relationship is subject of our explorative study

Item Type: Article
Uncontrolled Keywords: degradation, dye-sensitized solar cells, absorbance index
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Engineering, Science and Mathematics > School of Chemistry
Date Deposited: 21 Mar 2016 11:08
Last Modified: 21 Mar 2016 11:08

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