Efficient large-area polymer solar cells on flexible substrates

Al-Ibrahim, Maher; Roth, H. Klaus; Sensfuss, Steffi
August 2004
Applied Physics Letters;8/30/2004, Vol. 85 Issue 9, p1481
Academic Journal
Polymer solar cells based on poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylene vinylene]:[6,6]-phenyl-C61-butyric acid methyl ester (1:3 wt %) were fabricated using flexible 5×5 cm2 polyester foils. These cells show a white-light power conversion efficiency of 3% comparable to smaller cells on glass published by other authors. Ten cells were arranged on one substrate with an active area of 25 and 175 mm2 demonstrating a remarkably high reproducibility. It was found that the open-circuit voltage does not depend on the device area. An increase of the cell area caused a slightly lower short-circuit current, lower fill factor, and lower white-light power conversion efficiency.


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