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The thickness of organic solar cells (OSCs) has been optimized by simulating current-voltage (J-V) behavior. Because the thickness of active layer (several hundred nanometers) in OSCs is comparable with the illumination wavelength, optical transfer matrix is applied to rigorously determine the optical electric field in thin-film devices, which is strongly affected by the optical interference. The...
We present our investigation of organic solar cells by modeling and simulation after numerically solving Poisson and continuity equations that describe the electric property of semiconductors. Specifically, simulations reveal that Langevin type recombination, which describes the loss mechanism in pristine materials with low mobility, is not proper to predict the performance of BHJ organic solar cells...
Investigation on the thickness dependent analysis clearly demonstrates that the slow carrier mobility is the main reason limiting the power conversion efficiency of conjugated polymer/fullerene organic solar cells. In order to increase the carrier mobility, single-walled carbon nanotubes (SWCNTs) are introduced into organic solar cells made from blended films of regioregular poly 3-hexylthiophene...
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