Nanosecond pulsed laser ablated sub-10 nm silicon nanoparticles for improving photovoltaic conversion efficiency of commercial solar cells

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buir.contributor.authorOkyay, Ali Kemal
dc.citation.issueNumber10en_US
dc.citation.volumeNumber19en_US
dc.contributor.authorRasouli, H. R.en_US
dc.contributor.authorGhobadi, A.en_US
dc.contributor.authorGhobadi, T. G. U.en_US
dc.contributor.authorAtes, H.en_US
dc.contributor.authorTopalli, K.en_US
dc.contributor.authorOkyay, Ali Kemalen_US
dc.date.accessioned2018-04-12T11:04:45Z
dc.date.available2018-04-12T11:04:45Z
dc.date.issued2017en_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractIn this paper, we demonstrate the enhancement of photovoltaic (PV) solar cell efficiency using luminescent silicon nanoparticles (Si-NPs). Sub-10 nm Si-NPs are synthesized via pulsed laser ablation technique. These ultra-small Si nanoparticles exhibit photoluminescence (PL) character tics at 425 and 517 nm upon excitation by ultra-violet (UV) light. Therefore, they can act as secondary light sources that convert high energetic photons to ones at visible range. This down-shifting property can be a promising approach to enhance PV performance of the solar cell, regardless of its type. As proof-of-concept, polycrystalline commercial solar cells with an efficiency of ca 10% are coated with these luminescent Si-NPs. The nanoparticle-decorated solar cells exhibit up to 1.64% increase in the external quantum efficiency with respect to the uncoated reference cells. According to spectral photo-responsivity characterizations, the efficiency enhancement is stronger in wavelengths below 550 nm. As expected, this is attributed to down-shifting via Si-NPs, which is verified by their PL characteristics. The results presented here can serve as a beacon for future performance enhanced devices in a wide range of applications based on Si-NPs including PVs and LED applications.en_US
dc.description.provenanceMade available in DSpace on 2018-04-12T11:04:45Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2017en
dc.identifier.doi10.1088/2040-8986/aa84dden_US
dc.identifier.eissn2040-8986en_US
dc.identifier.issn2040-8978
dc.identifier.urihttp://hdl.handle.net/11693/37166
dc.language.isoEnglishen_US
dc.publisherInstitute of Physics Publishing Ltd.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/2040-8986/aa84dden_US
dc.source.titleJournal of Optics (United Kingdom)en_US
dc.subjectEfficiency enhancementen_US
dc.subjectLaser ablationen_US
dc.subjectSilicon nanoparticleen_US
dc.subjectSolar cellen_US
dc.subjectAblationen_US
dc.subjectEfficiencyen_US
dc.subjectImage enhancementen_US
dc.subjectLaser ablationen_US
dc.subjectLighten_US
dc.subjectLight emitting diodesen_US
dc.subjectLight sourcesen_US
dc.subjectLuminescenceen_US
dc.subjectNanoparticlesen_US
dc.subjectPulsed lasersen_US
dc.subjectSiliconen_US
dc.subjectSolar cellsen_US
dc.subjectSolar power generationen_US
dc.subjectUltrafast lasersen_US
dc.subjectEfficiency enhancementen_US
dc.subjectExternal quantum efficiencyen_US
dc.subjectFuture performanceen_US
dc.subjectNanosecond pulsed laseren_US
dc.subjectPhotoresponsivityen_US
dc.subjectPhotovoltaic conversionen_US
dc.subjectSilicon nanoparticlesen_US
dc.subjectSolar cell efficienciesen_US
dc.subjectSilicon solar cellsen_US
dc.titleNanosecond pulsed laser ablated sub-10 nm silicon nanoparticles for improving photovoltaic conversion efficiency of commercial solar cellsen_US
dc.typeArticleen_US

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