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    PERFORMANCE OF DYE SENSITIZED SOLAR CELLS FABRICATED FROM OBLIQUELY DC SPUTTERED TiO2 FILMS

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    Date
    2006
    Author
    Waita, SM
    Mwabora, JM
    Aduda, Bernard O
    Niklasson, GA
    Lindquist, Sten-Eric
    Granqvist, Claes-Goran
    Type
    Article
    Language
    en
    Metadata
    Show full item record

    Abstract
    - Nanocrystalline porous titanium oxide films of varying thickness have been deposited in ambient by reactive DC magnetron sputtering at a fixed but high oblique angle of 60o, and then converted to TiO2 by thermal annealing at 450 oC for 4 hours. X-ray diffraction analysis of the films showed that they were predominantly of anatase phase, whereas the as-deposited films were amorphous. Top–down scanning electron microscope images of the annealed films showed cauliflower-like surfaces, and exhibited well-defined columns. Atomic force microscope images revealed rough surfaces with larger nodules for thicker films. With the annealed films as the working electrodes in a dye-sensitised solar cell, it was established that the photoelectric conversion efficiency increased with the film thickness. The highest efficiency was ~ 3.3 % at an illumination intensity of 100 W/m2.
    URI
    http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/33185
    Citation
    AJST, Vol. 7, No. 2: December, 2006
    Publisher
    Department of Physics, University of Nairobi,
     
    Department of Engineering Sciences, Solid State Physics, The Angstrom Laboratory, Uppsala University,
     
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    • Faculty of Science & Technology (FST) [4284]

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