%0 Journal Article %T Matching of Silicon Thin-Film Tandem Solar Cells for Maximum Power Output %A C. Ulbrich %A C. Zahren %A A. Gerber %A B. Blank %J International Journal of Photoenergy %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/314097 %U http://dx.doi.org/10.1155/2013/314097