INVESTIGATIONS OF DARK FORWARD I-V CHARACTERISTICS OF SOLAR CELL PARAMETERS
Publication Date : 01/08/2008
The grade of a solar cell depends mainly on the quality of the starting material. During the production of this material, many impurities are left in the bulk material and form defect levels in the band-gap, which -act as generation-recombination centers or charge carrier traps. These levels influence the efficiency of solar cells. Therefore the knowledge of the parameters of these levels, e.g. energy position, capture cross section and charge concentration, is very useful in solar cell engineering and its applications. This paper discussed a simple and fast method of obtaining these parameters, i.e. evaluations of dark characteristics. Test results are presented, together with the some difficulties and limitations of the method.
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