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Article: Efficient inverted polymer solar cells with directly patterned active layer and silver back grating

TitleEfficient inverted polymer solar cells with directly patterned active layer and silver back grating
Authors
Issue Date2012
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/
Citation
Journal Of Physical Chemistry C, 2012, v. 116 n. 12, p. 7200-7206 How to Cite?
AbstractWe have investigated the effects of a directly patterned active layer together with silver nanograting arrays as the anode of inverted polymer solar cells (PSCs). The patterned nanostructure not only greatly enhances the light absorption of the active layer through both light diffraction and coupling to surface plasmon polariton (SPP) modes but also obviously promotes the fill factor of the patterned device. The absorption spectrum shows improvement over a broad wavelength range, especially around the 400 nm region and the near-infrared region surrounding 700 nm, which can also be reconfirmed from Incident Photon to Electron Conversion Efficiency (IPCE) and zeroth-order reflection spectra. Most importantly, our physical study shows that the absorption peak of 400 nm is due to the resonant waveguide mode, and the absorption peak of 700 nm is attributed to the excited SPP mode induced by the metallic back grating. Besides, another splitting SPP mode, called plasmonic band edge, around 800 nm is clarified from our detailed model. Consequently, on one hand, our work offers the fundamental physical understanding of plasmonic band edge resonances in periodic grating nanostructures for enhancing the optical absorption of thin-film photovoltaics. On the other hand, the study contributes to improving the power conversion efficiency of inverted PSCs by about 19% through incorporating grating structures that can be a potential candidate for improving the performances of other PSCs. © 2012 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/146871
ISSN
2015 Impact Factor: 4.509
2015 SCImago Journal Rankings: 1.995
ISI Accession Number ID
Funding AgencyGrant Number
UGC of the University of Hong Kong10400897
10401466
HKU from the Research Grants Council of Hong Kong Special Administrative Region, China712108
712010
Funding Information:

This work is supported by UGC grants (#10400897 and #10401466) of the University of Hong Kong, the General Research Funds (HKU#712108 and HKU#712010) from the Research Grants Council of Hong Kong Special Administrative Region, China.

References

 

DC FieldValueLanguage
dc.contributor.authorLi, XHen_HK
dc.contributor.authorSha, WEIen_HK
dc.contributor.authorChoy, WCHen_HK
dc.contributor.authorFung, DDSen_HK
dc.contributor.authorXie, FXen_HK
dc.date.accessioned2012-05-23T05:43:19Z-
dc.date.available2012-05-23T05:43:19Z-
dc.date.issued2012en_HK
dc.identifier.citationJournal Of Physical Chemistry C, 2012, v. 116 n. 12, p. 7200-7206en_HK
dc.identifier.issn1932-7447en_HK
dc.identifier.urihttp://hdl.handle.net/10722/146871-
dc.description.abstractWe have investigated the effects of a directly patterned active layer together with silver nanograting arrays as the anode of inverted polymer solar cells (PSCs). The patterned nanostructure not only greatly enhances the light absorption of the active layer through both light diffraction and coupling to surface plasmon polariton (SPP) modes but also obviously promotes the fill factor of the patterned device. The absorption spectrum shows improvement over a broad wavelength range, especially around the 400 nm region and the near-infrared region surrounding 700 nm, which can also be reconfirmed from Incident Photon to Electron Conversion Efficiency (IPCE) and zeroth-order reflection spectra. Most importantly, our physical study shows that the absorption peak of 400 nm is due to the resonant waveguide mode, and the absorption peak of 700 nm is attributed to the excited SPP mode induced by the metallic back grating. Besides, another splitting SPP mode, called plasmonic band edge, around 800 nm is clarified from our detailed model. Consequently, on one hand, our work offers the fundamental physical understanding of plasmonic band edge resonances in periodic grating nanostructures for enhancing the optical absorption of thin-film photovoltaics. On the other hand, the study contributes to improving the power conversion efficiency of inverted PSCs by about 19% through incorporating grating structures that can be a potential candidate for improving the performances of other PSCs. © 2012 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/en_HK
dc.relation.ispartofJournal of Physical Chemistry Cen_HK
dc.titleEfficient inverted polymer solar cells with directly patterned active layer and silver back gratingen_HK
dc.typeArticleen_HK
dc.identifier.emailSha, WEI:shawei@hku.hken_HK
dc.identifier.authoritySha, WEI=rp01605en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jp211237cen_HK
dc.identifier.scopuseid_2-s2.0-84859354913en_HK
dc.identifier.hkuros199657en_US
dc.identifier.hkuros208007-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84859354913&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume116en_HK
dc.identifier.issue12en_HK
dc.identifier.spage7200en_HK
dc.identifier.epage7206en_HK
dc.identifier.isiWOS:000302051100052-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, XH=55173362900en_HK
dc.identifier.scopusauthoridSha, WEI=34267903200en_HK
dc.identifier.scopusauthoridChoy, WCH=55169243600en_HK
dc.identifier.scopusauthoridFung, DDS=53163392700en_HK
dc.identifier.scopusauthoridXie, FX=45961747700en_HK

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