dc.contributor.author | Waita, SM | |
dc.contributor.author | Mwabora, JM | |
dc.contributor.author | Aduda, Bernard O | |
dc.contributor.author | Niklasson, GA | |
dc.contributor.author | Lindquist, Sten-Eric | |
dc.contributor.author | Granqvist, Claes-Goran | |
dc.date.accessioned | 2013-06-13T13:06:58Z | |
dc.date.issued | 2006 | |
dc.identifier.citation | AJST, Vol. 7, No. 2: December, 2006 | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/33185 | |
dc.description.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. | en |
dc.language.iso | en | en |
dc.title | PERFORMANCE OF DYE SENSITIZED SOLAR CELLS FABRICATED FROM OBLIQUELY DC SPUTTERED TiO2 FILMS | en |
dc.type | Article | en |
local.publisher | Department of Physics, University of Nairobi, | en |
local.publisher | Department of Engineering Sciences, Solid State Physics, The Angstrom Laboratory, Uppsala University, | en |