dc.contributor.author | Kjeldstad, Torunn | |
dc.contributor.author | Thøgersen, Annett | |
dc.contributor.author | Stange, Marit Synnøve Sæverud | |
dc.contributor.author | Jensen, Ingvild Julie Thue | |
dc.contributor.author | Monakhov, Eduard | |
dc.contributor.author | Galeckas, Augustinas | |
dc.date.accessioned | 2020-05-06T08:03:36Z | |
dc.date.available | 2020-05-06T08:03:36Z | |
dc.date.created | 2019-09-17T20:22:13Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Nanomaterials. 2019, 9 (8), 1-12. | en_US |
dc.identifier.issn | 2079-4991 | |
dc.identifier.uri | https://hdl.handle.net/11250/2653423 | |
dc.description.abstract | We present a study of the surface effects and optical properties of the self-assembled nanostructures comprised of vertically aligned 5 nm-diameter Al nanowires embedded in an amorphous Si matrix (a-Si:Al). The controlled (partial) removal of Al nanowires in a selective etching process yielded nanoporous a-Si media with a variable effective surface area. Different spectroscopy techniques, such as X-ray photoelectron spectroscopy (XPS), UV-Vis spectrophotometry and photoluminescence (PL), have been combined to investigate the impact of such nanostructuring on optical absorption and emission properties. We also examine long-term exposure to air ambient and show that increasing level of surface oxidation determines the oxide defect-related nature of the dominant PL emission from the nanoporous structures. The role of bulk, nanosize and surface effects in optical properties has been separated and quantified, providing a better understanding of the potential of such nanoporous a-Si:Al structures for future device developments | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | Amorphous silicon | en_US |
dc.subject | Self-assembly | en_US |
dc.subject | Nanowires | en_US |
dc.subject | Aluminum | en_US |
dc.subject | Photoluminescence | en_US |
dc.title | Surface effects and optical properties of self-assembled nanostructured a-Si:Al | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). | en_US |
dc.source.pagenumber | 1-12 | en_US |
dc.source.volume | 9 | en_US |
dc.source.journal | Nanomaterials | en_US |
dc.source.issue | 8 | en_US |
dc.identifier.doi | 10.3390/nano9081106 | |
dc.identifier.cristin | 1725922 | |
dc.relation.project | Norges forskningsråd: 231658 | en_US |
dc.relation.project | Norges forskningsråd: 245963 | en_US |
cristin.unitcode | 7401,80,62,0 | |
cristin.unitname | Bærekraftig energiteknologi | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |