||Performance Comparison of a Dye-Sensitized and a Silicon Solar Cell under Idealized and Outdoor Conditions
||Jensen, Katrine Flarup
||Larsen, Esben (Electric Power Engineering, Department of Electrical Engineering, Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark)
Lauritzen, Hanne (Danish Technological Institute)
Hinsch, Andreas (Fraunhofer-Institute for Solar Energy Systems ISE)
||Technical University of Denmark, DTU, DK-2800 Kgs. Lyngby, Denmark
||The present thesis investigates the performance of a dye-sensitized solar cell (DSC)
compared to a silicon solar cell under both idealized and outdoor conditions.
Due to the fundamental difference in cell structure of the DSC and the silicon cell,
different electrical behaviour under varying conditions is expected. An understanding of
the cell behaviour with respect to the performance parameters:
× Irradiance Intensity
× Operating Cell Temperature
× Incidence Angle
is sought by experimental investigations and a following data analysis.
The work in this thesis is strongly based on experiments as well as a comparison of
results with theoretical relations about electrical behaviour.
The experimental investigations have been carried out in the laboratory under controlled
conditions and the influence of one performance parameter could be determined. The
cells investigated show very different electrical behavior under varying conditions. The
DSC exhibits highest conversion efficiency under low light conditions, whereas the
highest conversion efficiency for silicon cells is seen at high irradiance. Under high
irradiance, the DSC shows positive dependence to elevated operating temperatures,
whereas the efficiency for the silicon cells is negatively proportional to cell temperature.
A beneficial ISC-generation is seen for the DSC for increasing incidence angles which
may be interpreted as the effect of increased light path within the active layers. The
silicon cells exhibits a reduction in relative ISC for increasing incidence angles due to the
increased reflection at the surface of the top-glass.
Outdoor measurements were used to verify if the results achieved in the laboratory were
visible under realistic operating conditions. Both the irradiance- and temperature
influence as identified in the lab was seen in the outdoor measurements, but the
beneficial behaviour of the DSC related to incidence angle was not observed. This
might be interpreted as influence of the surface reflectance at the top-glass. As
characterization parameters, the irradiance intensity and cell temperature are therefore
seen to hold greatest importance for the cell performance for both DSC and silicon cells,
but also the influence of incidence angle due to reflection is an influential parameter for
Creation date: 2009-05-07
Update date: 2009-05-07