Publications associated with Advanced Functional Materials and Devices Group

Characterization of tandem organic solar cells comprising subcells of identical absorber material

Progress in Photovoltaics: Research and Applications (2014)

R Timmreck, K Leo, M Riede

Recently organic tandem solar cells with record efficiency had been shown comprising identical absorber materials in both subcells. Such structures pose new challenges for characterization. The standard test methods for measuring spectral response of tandem solar cells can not be applied. The standard procedures demand for different bias illumination during measuring spectral response allowing to select the subcell being current limiting. With subcells comprising identical absorber materials, thus having identical absorption spectra, such a selection is not trivial. In this paper, we show that with the help of detailed optical simulations of such tandem organic solar cells, their characterization is possible, and we apply the proposed method to a sample structure. © 2014 John Wiley & Sons, Ltd.

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