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Constructing non-planar conjugated systems is important to achieve high performing acceptors for non-fullerene solar cells. Non-planar unit triphenylamine (TPA) was copolymerized with accepting units, isoindigo (IIG) or naphthalene diimide (NDI),… Click to show full abstract
Constructing non-planar conjugated systems is important to achieve high performing acceptors for non-fullerene solar cells. Non-planar unit triphenylamine (TPA) was copolymerized with accepting units, isoindigo (IIG) or naphthalene diimide (NDI), to afford three non-planar conjugated polymers. By changing the accepting moieties and the alkyl chains, the physicochemical properties and photovoltaic characteristics of the conjugated polymers were systematically tuned. As a result, the efficiency of the all-polymer solar cells was significantly enhanced to 2.2%.
Journal Title: Dyes and Pigments
Year Published: 2017
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