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The effect of dielectric spacer thickness on surface plasmon enhanced solar cells for front and rear side depositions

Pillai, S.; Beck, Fiona; Catchpole, Kylie; Ouyang, Z.; Green, M. A.

Description

The excitation of surface plasmons on metallic nanoparticles has the potential to significantly improve the performance of solar cells, in particular thin-film structures. In this article, we investigate the effect of the dielectric spacer layer thickness on the photocurrent enhancement of 2 μm thick, thin-film poly-Si on glass solar cells, due to random arrays of self-assembled Ag nanoparticlesdeposited on the front or the rear of the cells. We report a strong asymmetry in the external quantum...[Show more]

dc.contributor.authorPillai, S.
dc.contributor.authorBeck, Fiona
dc.contributor.authorCatchpole, Kylie
dc.contributor.authorOuyang, Z.
dc.contributor.authorGreen, M. A.
dc.date.accessioned2015-12-03T02:45:41Z
dc.date.available2015-12-03T02:45:41Z
dc.identifier.issn0021-8979
dc.identifier.urihttp://hdl.handle.net/1885/16995
dc.description.abstractThe excitation of surface plasmons on metallic nanoparticles has the potential to significantly improve the performance of solar cells, in particular thin-film structures. In this article, we investigate the effect of the dielectric spacer layer thickness on the photocurrent enhancement of 2 μm thick, thin-film poly-Si on glass solar cells, due to random arrays of self-assembled Ag nanoparticlesdeposited on the front or the rear of the cells. We report a strong asymmetry in the external quantum efficiency (EQE) of the cell for front and rear located particles for different spacer thicknesses, which is attributed to differences in the scattering behavior of the nanoparticles. We find that for random arrays, with spectrally broad scattering resonances, the strength of the driving field and the coupling efficiency are more important for light trapping than the resonance wavelength. For particles located on the front of the cells it is desirable to have a thin dielectric spacer layer to enhance the scattering from the Ag nanoparticles. Additionally, light trapping provided by the random sized particles on the front can overcome suppression of light transmitted in the visible wavelength regions for thin layers of Si, to result in overall EQE enhancements. However, for particles deposited on the rear it is more beneficial to have the particles as close to the Si substrate as possible to increase both the scattering and the coupling efficiency.
dc.description.sponsorshipK.R.C. acknowledges the support of an Australian Research Council fellowship and the EU FP7 PRIMA project.
dc.publisherAmerican Institute of Physics (AIP)
dc.rights© 2011 American Institute of Physics.
dc.sourceJournal of Applied Physics
dc.subjectAg nanoparticle
dc.subjectCoupling efficiency
dc.subjectDielectric spacers
dc.subjectDriving field
dc.subjectExternal quantum efficiency
dc.subjectGlass solar cells
dc.subjectLight-trapping
dc.subjectMetallic nanoparticles
dc.subjectPhotocurrent enhancement
dc.subjectPoly-Si
dc.subjectRandom array
dc.subjectRear side
dc.subjectResonance wavelengths
dc.subjectScattering
dc.titleThe effect of dielectric spacer thickness on surface plasmon enhanced solar cells for front and rear side depositions
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume109
dc.date.issued2011-04-04
local.identifier.absfor090605
local.identifier.ariespublicationu4334215xPUB884
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
local.contributor.affiliationPillai, Supriya, University of New South Wales, Australia
local.contributor.affiliationBeck, Fiona, College of Engineering and Computer Science, College of Engineering and Computer Science, Research School of Engineering, The Australian National University
local.contributor.affiliationCatchpole, Kylie, College of Engineering and Computer Science, College of Engineering and Computer Science, Research School of Engineering, The Australian National University
local.contributor.affiliationOuyang, Z, University of New South Wales, Australia
local.contributor.affiliationGreen, Martin Andrew, University of New South Wales, Australia
local.bibliographicCitation.issue7
local.bibliographicCitation.startpage073105
local.identifier.doi10.1063/1.3567299
local.identifier.absseo850504
dc.date.updated2016-02-24T11:04:00Z
local.identifier.scopusID2-s2.0-79955422688
local.identifier.thomsonID000289949000006
dc.provenancehttp://www.sherpa.ac.uk/romeo/issn/0021-8979..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 3/12/15). This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Journal of Applied Physics and may be found at https://doi.org/10.1063/1.3567299
CollectionsANU Research Publications

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