Scott A. Mauger, Lilian Chang, Stephan Friedrich, Christopher W. Rochester, David M. Huang, Peng Wang and Adam J. Moulé Self-Assembly of Selective Interfaces in Organic Photovoltaics Advanced Functional Materials 23
It is shown that the metal capping electrode in an organic photovoltaic device affects the stratification of materials in the bulk heterojunction (BHJ) and that solvent additives can inhibit stratification. It is found that some metals can donate charge to (6,6)-phenyl-C61-butyric acid methyl ester (PCBM). The enrichment and charging of PCBM at the interface with the metal increases device power conversion efficiency.
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