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ECN publication
Review on the importance of morphology control in polymer solar cells
Bavel, S.S. van; Veenstra, S.C.; Loos, J.
Published by: Publication date:
ECN Solar Energy 14-7-2010
ECN report number: Document type:
ECN-W--10-023 Article (scientific)
Number of pages:

Published in: Macromolecular Journals Rapid Communications (Wiley Verlag GmbH& Co.), , 2010, Vol.31, p.-.

The recent progress in understanding on how the efficiency of a bulk heterojunction PSC depends on the local nanoscale volume organisation of the photoactive layer is reviewed. A quantitative analysis of the phase separation and percolation pathways was performed and used to explain the performance of P3HT/ZnO devices with different thickness. It is concluded that the relatively poor performance of thin P3HT/ZnO solar cells is related to inefficient charge generation as a result of the low ZnO content, to the coarse phase segregation, and to the exciton losses impaired by the electrodes.

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