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Title:
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Review on the importance of morphology control in polymer solar cells
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Author(s):
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Bavel, S.S. van; Veenstra, S.C.; Loos, J.
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Published by:
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Publication date:
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ECN
Solar Energy
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14-7-2010
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ECN report number:
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Document type:
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ECN-W--10-023
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Article (scientific)
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Number of pages:
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11
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Published in: Macromolecular Journals Rapid Communications (Wiley Verlag GmbH& Co.), , 2010, Vol.31, p.-.
Abstract:
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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