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Article: Optical and electrical study of organic solar cells with a 2D grating anode
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TitleOptical and electrical study of organic solar cells with a 2D grating anode
 
AuthorsSha, WEI1
Choy, WCH1
Wu, Y1
Chew, WC1 2
 
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
 
CitationOptics Express, 2012, v. 20 n. 3, p. 2572-2580 [How to Cite?]
DOI: http://dx.doi.org/10.1364/OE.20.002572
 
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.
 
ISSN1094-4087
2013 Impact Factor: 3.525
2013 SCImago Journal Rankings: 2.668
 
DOIhttp://dx.doi.org/10.1364/OE.20.002572
 
ISI Accession Number IDWOS:000300499500064
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorSha, WEI
 
dc.contributor.authorChoy, WCH
 
dc.contributor.authorWu, Y
 
dc.contributor.authorChew, WC
 
dc.date.accessioned2012-05-23T05:43:18Z
 
dc.date.available2012-05-23T05:43:18Z
 
dc.date.issued2012
 
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.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationOptics Express, 2012, v. 20 n. 3, p. 2572-2580 [How to Cite?]
DOI: http://dx.doi.org/10.1364/OE.20.002572
 
dc.identifier.doihttp://dx.doi.org/10.1364/OE.20.002572
 
dc.identifier.eissn1094-4087
 
dc.identifier.epage2580
 
dc.identifier.hkuros199654
 
dc.identifier.hkuros208026
 
dc.identifier.isiWOS:000300499500064
 
dc.identifier.issn1094-4087
2013 Impact Factor: 3.525
2013 SCImago Journal Rankings: 2.668
 
dc.identifier.issue3
 
dc.identifier.pmid22330495
 
dc.identifier.scopuseid_2-s2.0-84863012349
 
dc.identifier.spage2572
 
dc.identifier.urihttp://hdl.handle.net/10722/146868
 
dc.identifier.volume20
 
dc.languageeng
 
dc.publisherOptical Society of America. The Journal's web site is located at http://www.opticsexpress.org
 
dc.publisher.placeUnited States
 
dc.relation.ispartofOptics Express
 
dc.relation.referencesReferences in Scopus
 
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 anode
 
dc.typeArticle
 
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<description.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&apos;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. &#169; 2012 Optical Society of America.</description.abstract>
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Author Affiliations
  1. The University of Hong Kong
  2. University of Illinois at Urbana-Champaign