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Article: Optical and electrical properties of efficiency enhanced polymer solar cells with Au nanoparticles in a PEDOT-PSS layer

TitleOptical and electrical properties of efficiency enhanced polymer solar cells with Au nanoparticles in a PEDOT-PSS layer
Authors
KeywordsActive layer
Au nanoparticle
Device performance
Electrical effects
Exciton quenching
Issue Date2011
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.asp
Citation
Journal Of Materials Chemistry, 2011, v. 21 n. 41, p. 16349-16356 How to Cite?
AbstractWe unveil new device physics and provide details of device mechanisms by investigating polymer solar cells (PSCs) incorporating Au nanoparticles (NPs) into the hole collection poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) layer. Theoretical and experimental results show that the very strong near field around Au NPs due to Localized Surface Plasmonic Resonance (LSPR) mainly distributes laterally along the PEDOT:PSS layer rather than vertically into the adjacent active layer, leading to minimal enhancement of light absorption in the active layer. This finding can be extended to a typical class of solar cells incorporating metallic NPs in spacing layers adjacent to the active layer. With optical effects proven to be minor contributors to device performance improvements, we investigate the electrical properties of the PSCs and obtain insights into the detailed device mechanisms. Improvements in power conversion efficiency (PCE) of solar cells are found to originate from the enlarged active layer/PEDOT:PSS interfacial area and improved PEDOT:PSS conductivity. At high NP concentrations, reduced exciton quenching at donor/acceptor junctions is found to cause PCE deterioration. Our findings indicate that it is highly important to investigate both optical and electrical effects for understanding and optimizing PSC performances. © 2011 The Royal Society of Chemistry.
Persistent Identifierhttp://hdl.handle.net/10722/146867
ISSN
2013 Impact Factor: 6.626
2015 SCImago Journal Rankings: 2.540
ISI Accession Number ID
Funding AgencyGrant Number
University of Hong Kong400897
Research Grants Council of Hong Kong Special Administrative Region, China712108
712010
Jiawei SolarChina, Co. Ltd.
State Key Laboratory of Modern Optical Instrumentations (Zhejiang University)
Funding Information:

This work is supported by UGC grant (#400897) of the University of Hong Kong and the General Research Fund (HKU#712108 and HKU#712010) from the Research Grants Council of Hong Kong Special Administrative Region, China, financial support from Jiawei SolarChina, Co. Ltd. and a grant from the State Key Laboratory of Modern Optical Instrumentations (Zhejiang University). We also acknowledge Luminescence Technology Corp. for their materials at special prices. We acknowledge the useful discussion with W. C. Chew on the results of the work.

References

 

DC FieldValueLanguage
dc.contributor.authorFung, DDSen_HK
dc.contributor.authorQiao, Len_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorWang, Cen_HK
dc.contributor.authorSha, WEIen_HK
dc.contributor.authorXie, Fen_HK
dc.contributor.authorHe, Sen_HK
dc.date.accessioned2012-05-23T05:43:18Z-
dc.date.available2012-05-23T05:43:18Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Materials Chemistry, 2011, v. 21 n. 41, p. 16349-16356en_HK
dc.identifier.issn0959-9428en_HK
dc.identifier.urihttp://hdl.handle.net/10722/146867-
dc.description.abstractWe unveil new device physics and provide details of device mechanisms by investigating polymer solar cells (PSCs) incorporating Au nanoparticles (NPs) into the hole collection poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) layer. Theoretical and experimental results show that the very strong near field around Au NPs due to Localized Surface Plasmonic Resonance (LSPR) mainly distributes laterally along the PEDOT:PSS layer rather than vertically into the adjacent active layer, leading to minimal enhancement of light absorption in the active layer. This finding can be extended to a typical class of solar cells incorporating metallic NPs in spacing layers adjacent to the active layer. With optical effects proven to be minor contributors to device performance improvements, we investigate the electrical properties of the PSCs and obtain insights into the detailed device mechanisms. Improvements in power conversion efficiency (PCE) of solar cells are found to originate from the enlarged active layer/PEDOT:PSS interfacial area and improved PEDOT:PSS conductivity. At high NP concentrations, reduced exciton quenching at donor/acceptor junctions is found to cause PCE deterioration. Our findings indicate that it is highly important to investigate both optical and electrical effects for understanding and optimizing PSC performances. © 2011 The Royal Society of Chemistry.en_HK
dc.languageengen_US
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/Publishing/Journals/jm/index.aspen_HK
dc.relation.ispartofJournal of Materials Chemistryen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectActive layer-
dc.subjectAu nanoparticle-
dc.subjectDevice performance-
dc.subjectElectrical effects-
dc.subjectExciton quenching-
dc.titleOptical and electrical properties of efficiency enhanced polymer solar cells with Au nanoparticles in a PEDOT-PSS layeren_HK
dc.typeArticleen_HK
dc.identifier.emailChoy, WCH:chchoy@eee.hku.hken_HK
dc.identifier.emailSha, WEI:shawei@hku.hken_HK
dc.identifier.authorityChoy, WCH=rp00218en_HK
dc.identifier.authoritySha, WEI=rp01605en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1039/c1jm12820een_HK
dc.identifier.scopuseid_2-s2.0-80053939319en_HK
dc.identifier.hkuros199653en_US
dc.identifier.hkuros208053-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053939319&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume21en_HK
dc.identifier.issue41en_HK
dc.identifier.spage16349en_HK
dc.identifier.epage16356en_HK
dc.identifier.isiWOS:000295733300007-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridFung, DDS=53163392700en_HK
dc.identifier.scopusauthoridQiao, L=36646781400en_HK
dc.identifier.scopusauthoridChoy, WCH=7006202371en_HK
dc.identifier.scopusauthoridWang, C=37113178400en_HK
dc.identifier.scopusauthoridSha, WEI=34267903200en_HK
dc.identifier.scopusauthoridXie, F=45961747700en_HK
dc.identifier.scopusauthoridHe, S=36048024500en_HK

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