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Bulk Heterojunction Solar Cells: A Mechanistic Understanding of Processing Additive‐Induced Efficiency Enhancement in Bulk Heterojunction Organic Solar Cells (Adv. Mater. 2/2014)

The introduction of processing additives is widely used to increase power conversion efficiencies in organic solar cells. Michael F. Toney, Jeremy R. Niskala and co-workers show on page 300 how additives change the polymer conformation in the casting solution leading to a more-intermixed phase-segregated network structure of the organic solar-cell active layer. This results in a five-fold enhancement in efficiency.