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Highly uniform and vertically aligned SnO2 nanochannel arrays for photovoltaic applications

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dc.contributor.authorKim J.-Y.-
dc.contributor.authorJin Soo Kang-
dc.contributor.authorShin J.-
dc.contributor.authorJin Kim-
dc.contributor.authorHan S.-J.-
dc.contributor.authorPark J.-
dc.contributor.authorMin Y.-S.-
dc.contributor.authorKo M.J.-
dc.contributor.authorYung-Eun Sung-
dc.date.available2016-01-07T09:13:30Z-
dc.date.created2015-05-18-
dc.date.issued2015-05-
dc.identifier.issn2040-3364-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/2021-
dc.description.abstractNanostructured electrodes with vertical alignment have been considered ideal structures for electron transport and interfacial contact with redox electrolytes in photovoltaic devices. Here, we report large-scale vertically aligned SnO<inf>2</inf> nanochannel arrays with uniform structures, without lateral cracks fabricated by a modified anodic oxidation process. In the modified process, ultrasonication is utilized to avoid formation of partial compact layers and lateral cracks in the SnO<inf>2</inf> nanochannel arrays. Building on this breakthrough, we first demonstrate the photovoltaic application of these vertically aligned SnO<inf>2</inf> nanochannel arrays. These vertically aligned arrays were directly and successfully applied in quasi-solid state dye-sensitized solar cells (DSSCs) as photoanodes, yielding reasonable conversion efficiency under back-side illumination. In addition, a significantly short process time (330 s) for achieving the optimal thickness (7.0 μm) and direct utilization of the anodized electrodes enable a simple, rapid and low-cost fabrication process. Furthermore, a TiO<inf>2</inf> shell layer was coated on the SnO<inf>2</inf> nanochannel arrays by the atomic layer deposition (ALD) process for enhancement of dye-loading and prolonging the electron lifetime in the DSSC. Owing to the presence of the ALD TiO<inf>2</inf> layer, the short-circuit photocurrent density (J<inf>sc</inf>) and conversion efficiency were increased by 20% and 19%, respectively, compared to those of the DSSC without the ALD TiO<inf>2</inf> layer. This study provides valuable insight into the development of efficient SnO<inf>2</inf>-based photoanodes for photovoltaic application by a simple and rapid fabrication process. This journal is © The Royal Society of Chemistry-
dc.description.uri1-
dc.language영어-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleHighly uniform and vertically aligned SnO2 nanochannel arrays for photovoltaic applications-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000354044600020-
dc.identifier.scopusid2-s2.0-84928902766-
dc.identifier.rimsid19628ko
dc.date.tcdate2018-10-01-
dc.contributor.affiliatedAuthorJin Soo Kang-
dc.contributor.affiliatedAuthorJin Kim-
dc.contributor.affiliatedAuthorYung-Eun Sung-
dc.identifier.doi10.1039/c5nr00202h-
dc.identifier.bibliographicCitationNANOSCALE, v.7, no.18, pp.8368 - 8377-
dc.citation.titleNANOSCALE-
dc.citation.volume7-
dc.citation.number18-
dc.citation.startPage8368-
dc.citation.endPage8377-
dc.date.scptcdate2018-10-01-
dc.description.wostc14-
dc.description.scptc16-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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