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Enhancing the Efficiency of Bulk Heterojunction Solar Cells via
Templated Self-Assembly

Morphology control in bulk heterojunction (BHJ)
solar cell is considered to be critical for the power conversion
efficiency (PCE). In this paper, we present a novel approach that
introduces polystyrene that organizes the poly(3-hexylthiophene)
(P3HT) into columnar phases decorated by [6,6]-phenyl C61-
butyric acid methyl ester (PCBM) at the interface. This structure
represents a realization of an idealized morphology of an organic
solar cell, in which both exiciton dissociation and the carrier
transport are optimized, leading to increased power conversion efficiency.
 

 

 

 

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