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
2011 Impact Factor: 3.587
2011 SCImago Journal Rankings: 1.956
DOIhttp://dx.doi.org/10.1364/OE.20.002572
ISI Accession Number IDWOS:000300499500064
ReferencesReferences in Scopus
DC Field
Value
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.epage2580
dc.identifier.hkuros199654
dc.identifier.hkuros208026
dc.identifier.isiWOS:000300499500064
dc.identifier.issn1094-4087
2011 Impact Factor: 3.587
2011 SCImago Journal Rankings: 1.956
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
Author Affiliations
  1. The University of Hong Kong
  2. University of Illinois