Effects of lattice strain and band offset on electron transfer rates in type-II nanorod heterostructures

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dc.contributor.authorMcDaniel, Hunter
dc.contributor.authorPelton, Matthew
dc.contributor.authorOh, Nuri
dc.contributor.authorShim, Moonsub
dc.date.accessioned2023-08-14T19:13:14Z
dc.date.available2023-08-14T19:13:14Z
dc.date.issued2012-04-12
dc.description.abstractType-II nanorod heterostructures (NRHs) exhibit efficient directional charge separation and provide the potential to control this flow of charges through changes in structure and composition. We use transient-absorption spectroscopy to investigate how the magnitude of band offset and lattice strain alters dynamics of photogenerated electrons in CdSe/CdTe type-II NRHs. In the absence of alloying and strain effects, electron transfer occurs in ∼300 fs. Reducing the conduction band offset by means of alloying leads to an even shorter charge-separation time (<200 fs), whereas curved NRHs with pronounced strain exhibit a longer charge-separation time of ∼700 fs.en_US
dc.description.sponsorshipThis material is based on work partially supported by the NSF (grant nos. 09-05175 and 11-53081) and the University of Illinois. Experiments were partially carried out in the Frederick Seitz Materials Research Laboratory Central Facilities, University of Illinois. Use of the Center for Nanoscale Materials was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under contract no. DE-AC02-06CH11357.en_US
dc.description.urihttps://pubs.acs.org/doi/10.1021/jz300275fen_US
dc.format.extent5 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2rlwo-cgmp
dc.identifier.citationMcDaniel, Hunter, Matthew Pelton, Nuri Oh, and Moonsub Shim. “Effects of Lattice Strain and Band Offset on Electron Transfer Rates in Type-II Nanorod Heterostructures.” The Journal of Physical Chemistry Letters 3, no. 9 (May 3, 2012): 1094–98. https://doi.org/10.1021/jz300275f.en_US
dc.identifier.urihttps://doi.org/10.1021/jz300275f
dc.identifier.urihttp://hdl.handle.net/11603/29212
dc.language.isoen_USen_US
dc.publisherACSen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleEffects of lattice strain and band offset on electron transfer rates in type-II nanorod heterostructuresen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-6370-8765en_US

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