Heteroepitaxial growth of colloidal nanocrystals onto substrate films via hot-injection routes

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dc.contributor.author Acharya, Krishna P.
dc.contributor.author Khon, Elena
dc.contributor.author O'Conner, Timothy
dc.contributor.author Nemitz, Ian
dc.contributor.author Klinkova, Anna
dc.contributor.author Khnayzer, Rony S.
dc.date.accessioned 2017-11-03T09:39:53Z
dc.date.available 2017-11-03T09:39:53Z
dc.date.copyright 2011 en_US
dc.date.issued 2017-11-03
dc.identifier.issn 1936-086X en_US
dc.identifier.uri http://hdl.handle.net/10725/6495
dc.description.abstract Hot-injection synthesis of colloidal nanocrystals (NCs) in a substrate-bound form is demonstrated. We show that polycrystalline films submerged into hot organic solvents can nucleate the heteroepitaxial growth of semiconductor NCs, for which the ensuing lattice quality and size distribution are on the par with those of isolated colloidal nanoparticles. This strategy is demonstrated by growing lead chalcogenide NCs directly onto solvent-submerged TiO2 substrates. The resulting PbX/TiO2 (X = S, Se, Te) nanocomposites exhibit heteroepitaxial interfaces between lead chalcogenide and oxide domains and show an efficient separation of photoinduced charges, deployable for light-harvesting applications. The extendibility of the present method to other material systems was demonstrated through the synthesis of CdS/TiO2 and Cu2S/TiO2 heterostructures, fabricated from PbS/TiO2 composites via cation exchange. The photovoltaic performance of nanocrystal/substrate composites comprising PbS NCs was evaluated by incorporating PbS/TiO2 films into prototype solar cells. en_US
dc.language.iso en en_US
dc.title Heteroepitaxial growth of colloidal nanocrystals onto substrate films via hot-injection routes en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SAS en_US
dc.author.idnumber 200501196 en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal ACS Nano en_US
dc.journal.volume 5 en_US
dc.journal.issue 6 en_US
dc.article.pages 4953-4964 en_US
dc.keywords Dye-sensitized en_US
dc.keywords Nanorods en_US
dc.keywords Photovoltaics en_US
dc.keywords Schottky en_US
dc.keywords Titanium dioxide en_US
dc.identifier.doi http://dx.doi.org/10.1021/nn201064n en_US
dc.identifier.ctation Acharya, K. P., Khon, E., O’Conner, T., Nemitz, I., Klinkova, A., Khnayzer, R. S., ... & Zamkov, M. (2011). Heteroepitaxial growth of colloidal nanocrystals onto substrate films via hot-injection routes. ACS nano, 5(6), 4953-4964. en_US
dc.author.email rony.khnayzer@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://pubs.acs.org/doi/abs/10.1021/nn201064n en_US
dc.note This original version contained a mistake and the correction to this mistake is published in ACS Nano (2011) 5 (11). https://pubs.acs.org/doi/10.1021/nn204019r en_US
dc.orcid.id https://orcid.org/0000-0001-7775-0027 en_US
dc.author.affiliation Lebanese American University en_US

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