Laser induced sponge-like Si in Si-rich oxides for photovoltaics

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buir.contributor.authorAydınlı, Atilla
dc.citation.epage24374en_US
dc.citation.issueNumber20en_US
dc.citation.spage24368en_US
dc.citation.volumeNumber21en_US
dc.contributor.authorGundogdu, S.en_US
dc.contributor.authorSungur Ozen, E.en_US
dc.contributor.authorHübner, R.en_US
dc.contributor.authorHeinig, K.H.en_US
dc.contributor.authorAydınlı, Atillaen_US
dc.date.accessioned2016-02-08T09:34:51Z
dc.date.available2016-02-08T09:34:51Z
dc.date.issued2013en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe show that a sponge-like structure of interconnected Si nanowires embedded in a dielectric matrix can be obtained by laser annealing of silicon rich oxides (SRO). Due to quantum confinement, the large bandgap displayed by these percolated nanostructures can be utilized as a tandem stage in 3rd generation thin-film solar cells. Well passivated by the SiO2 dielectric matrix, they are expected to overcome the difficulty of carrier separation encountered in the case of isolated crystalline quantum dots. In this study PECVD grown SRO were irradiated by a cw Ar+ laser. Raman spectroscopy has been used to assess the crystallinity of the Si nanostructures and thus to optimize the annealing conditions as dwell times and power densities. In addition, Si plasmon imaging in the transmission electron microscope was applied to identify the sponge-like structure of phase-separated silicon. © 2013 Optical Society of America.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T09:34:51Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2013en
dc.identifier.doi10.1364/OE.21.024368en_US
dc.identifier.issn10944087
dc.identifier.urihttp://hdl.handle.net/11693/20767
dc.language.isoEnglishen_US
dc.publisherOptical Society of American (OSA)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1364/OE.21.024368en_US
dc.source.titleOptics Expressen_US
dc.subjectArgon lasersen_US
dc.subjectNanowiresen_US
dc.subjectSilicon oxidesen_US
dc.subjectTransmission electron microscopyen_US
dc.subjectAnnealing conditionen_US
dc.subjectCarrier separationen_US
dc.subjectDielectric matrixesen_US
dc.subjectLaser annealingen_US
dc.subjectSi nanostructuresen_US
dc.subjectSilicon rich oxidesen_US
dc.subjectSpongelike structureen_US
dc.subjectThin-film solar cellsen_US
dc.subjectSiliconen_US
dc.titleLaser induced sponge-like Si in Si-rich oxides for photovoltaicsen_US
dc.typeArticleen_US

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