Dependence of recombination mechanisms and strength on processing conditions in polymer solar cells Chaudhary, Sumit Nalwa, Kanwar Kodali, Hari Ganapathysubramanian, Baskar Ganapathysubramanian, Baskar Chaudhary, Sumit
dc.contributor.department Mechanical Engineering
dc.contributor.department Electrical and Computer Engineering 2018-02-18T13:43:55.000 2020-06-30T06:04:01Z 2020-06-30T06:04:01Z Sat Jan 01 00:00:00 UTC 2011 2011-01-01
dc.description.abstract <p>Charge carrier recombination due to carrier trapping is not often considered in polymer based solar cells, except in those using non-fullerene acceptors or new donor polymers with limited short-range order. However, we show that even for the canonical poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester (P3HT:PCBM) system, relative strengths of bimolecular and trap-assisted recombination are strongly dependent on processing conditions. For slow-grown active-layers, bimolecular recombination is indeed the major loss mechanism under one sun illumination. However, for fast-grown active-layers, trap-assisted recombination dominates over bimolecular recombination by an order of magnitude, and recombination strength at short-circuit condition is 3-4 times higher, leading to loss of photocurrent and lowering of fill factor.</p>
dc.description.comments <p>This article is published as Nalwa, Kanwar S., Hari K. Kodali, Baskar Ganapathysubramanian, and Sumit Chaudhary. "Dependence of recombination mechanisms and strength on processing conditions in polymer solar cells." <em>Applied Physics Letters</em> 99, no. 26 (2011): 279. DOI:<a href="" target="_blank">10.1063/1.3671999</a>. Posted with permission.</p>
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dc.identifier.articleid 1228
dc.identifier.contextkey 10284884
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dc.language.iso en
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dc.source.uri 10.1063/1.3671999
dc.subject.disciplines Acoustics, Dynamics, and Controls
dc.subject.disciplines Mechanical Engineering
dc.subject.disciplines Mechanics of Materials
dc.subject.disciplines Polymer and Organic Materials
dc.subject.disciplines Power and Energy
dc.title Dependence of recombination mechanisms and strength on processing conditions in polymer solar cells
dc.type article
dc.type.genre article
dspace.entity.type Publication
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