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Surya Prakash Singh, CH Pavan Kumar, G. D. Sharma, J. A. Mikroyannidis, Manjeet Singh and Rajnish Kurchania High-efficiency polymer solar cells based on phenylenevinylene copolymer with BF2-azopyrrole complex and CN-PC70BM with solvent additive Journal of Polymer Science Part B: Polymer Physics 50

Article first published online: 28 SEP 2012 | DOI: 10.1002/polb.23160

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Polymer solar cells hold promise for generating renewable energy at low cost, but the low efficiency of the cells at converting light to power is a problem. Here, a processing additive (chloronaphthalene) in the active layer and control of the drying conditions are shown to provide effective means to control both the surface roughness and interpenetrating networks. This enhances exciton dissociation into charge carriers, charge transportation, and collection to more than double the power conversion efficiency.

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