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Morphological Device Model for Organic Bulk Heterojunction Solar Cells
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands.
Eindhoven University of Technology, Netherlands; Eindhoven University of Technology, Netherlands.
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2009 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 9, no 8, 3032-3037 p.Article in journal (Refereed) Published
Abstract [en]

We present a numerical model for calculating current-voltage characteristics of polymer:fullerene bulk hetrojunction solar cells at different degrees of nanoscale phase separation. We show that the short-circuit current enhancement with finer phase separation is due to a reduction in bimolecular recombination caused by lateral movement of photogenerated electrons to the fullerene-rich phase. At high bias, vertical electron transport is enhanced and lateral movement is reduced, causing a significant field-dependent carrier extraction for coarse morphologies.

Place, publisher, year, edition, pages
American Chemical Society , 2009. Vol. 9, no 8, 3032-3037 p.
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-141487DOI: 10.1021/nl901511aISI: 000268797200040PubMedID: 19719114OAI: oai:DiVA.org:liu-141487DiVA: diva2:1145685
Note

Funding Agencies|Ministry of Economic Affairs

Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-10-06

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