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Article: Optical and electrical study of organic solar cells with a 2D grating anode

TitleOptical and electrical study of organic solar cells with a 2D grating anode
Authors
Keywords2D grating
Driftdiffusion equations
Electrical studies
Exciton generation
Finite difference
Issue Date2012
PublisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2012, v. 20 n. 3, p. 2572-2580 How to Cite?
Abstract
We investigate both optical and electrical properties of organic solar cells (OSCs) incorporating 2D periodic metallic back grating as an anode. Using a unified finite-difference approach, the multiphysics modeling framework for plasmonic OSCs is established to seamlessly connect the photon absorption with carrier transport and collection by solving the Maxwell's equations and semiconductor equations (Poisson, continuity, and drift-diffusion equations). Due to the excited surface plasmon resonance, the significantly nonuniform and extremely high exciton generation rate near the metallic grating are strongly confirmed by our theoretical model. Remarkably, the nonuniform exciton generation indeed does not induce more recombination loss or smaller open-circuit voltage compared to 1D multilayer standard OSC device. The increased open-circuit voltage and reduced recombination loss by the plasmonic OSC are attributed to direct hole collections at the metallic grating anode with a short transport path. The work provides an important multiphysics understanding for plasmonic organic photovoltaics. © 2012 Optical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/146868
ISSN
2013 Impact Factor: 3.525
2013 SCImago Journal Rankings: 2.668
ISI Accession Number ID
References

 

Author Affiliations
  1. The University of Hong Kong
  2. University of Illinois at Urbana-Champaign
DC FieldValueLanguage
dc.contributor.authorSha, WEIen_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorWu, Yen_HK
dc.contributor.authorChew, WCen_HK
dc.date.accessioned2012-05-23T05:43:18Z-
dc.date.available2012-05-23T05:43:18Z-
dc.date.issued2012en_HK
dc.identifier.citationOptics Express, 2012, v. 20 n. 3, p. 2572-2580en_HK
dc.identifier.issn1094-4087en_HK
dc.identifier.urihttp://hdl.handle.net/10722/146868-
dc.description.abstractWe investigate both optical and electrical properties of organic solar cells (OSCs) incorporating 2D periodic metallic back grating as an anode. Using a unified finite-difference approach, the multiphysics modeling framework for plasmonic OSCs is established to seamlessly connect the photon absorption with carrier transport and collection by solving the Maxwell's equations and semiconductor equations (Poisson, continuity, and drift-diffusion equations). Due to the excited surface plasmon resonance, the significantly nonuniform and extremely high exciton generation rate near the metallic grating are strongly confirmed by our theoretical model. Remarkably, the nonuniform exciton generation indeed does not induce more recombination loss or smaller open-circuit voltage compared to 1D multilayer standard OSC device. The increased open-circuit voltage and reduced recombination loss by the plasmonic OSC are attributed to direct hole collections at the metallic grating anode with a short transport path. The work provides an important multiphysics understanding for plasmonic organic photovoltaics. © 2012 Optical Society of America.en_HK
dc.languageengen_US
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.orgen_HK
dc.relation.ispartofOptics Expressen_HK
dc.rightsOptics Express. Copyright © Optical Society of America.-
dc.rightsThis paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-3-2572. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject2D grating-
dc.subjectDriftdiffusion equations-
dc.subjectElectrical studies-
dc.subjectExciton generation-
dc.subjectFinite difference-
dc.titleOptical and electrical study of organic solar cells with a 2D grating anodeen_HK
dc.typeArticleen_HK
dc.identifier.emailSha, WEI:shawei@hku.hken_HK
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_HK
dc.identifier.authoritySha, WEI=rp01605en_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1364/OE.20.002572en_HK
dc.identifier.pmid22330495-
dc.identifier.scopuseid_2-s2.0-84863012349-
dc.identifier.hkuros199654en_US
dc.identifier.hkuros208026-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84856422953&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume20en_HK
dc.identifier.issue3en_HK
dc.identifier.spage2572en_HK
dc.identifier.epage2580en_HK
dc.identifier.eissn1094-4087-
dc.identifier.isiWOS:000300499500064-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSha, WEI=34267903200en_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridWu, Y=54943599400en_HK
dc.identifier.scopusauthoridChew, WC=7409885655en_HK

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