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Time-resolved photoluminescence spectroscopy of ligand-capped PbS nanocrystals

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dc.contributor.authorWarner, Jamie H.
dc.contributor.authorThomsen, Elizabeth
dc.contributor.authorWatt, Andrew
dc.contributor.authorHeckenberg, Norman Richard
dc.contributor.authorRubinsztein-Dunlop, Halina
dc.date.accessioned2015-12-08T22:38:46Z
dc.date.issued2005
dc.date.updated2015-12-08T10:10:19Z
dc.description.abstractPbS nanocrystals are synthesized using colloidal techniques and have their surfaces capped with oleic acid. The absorption band edge of the PbS nanocrystals is tuned between 900 and 580 nm. The PbS nanocrystals exhibit tuneable photoluminescence with large non-resonant Stokes shifts of up to 500 meV. The magnitude of the Stokes shift is found to be dependent upon the size of PbS nanocrystals. Time-resolved photoluminescence spectroscopy of the PbS nanocrystals reveals that the photoluminescence has an extraordinarily long lifetime of 1 μs. This long fluorescence lifetime is attributed to the effect of dielectric screening similar to that observed in other IV-VI semiconductor nanocrystals.
dc.identifier.issn0957-4484
dc.identifier.urihttp://hdl.handle.net/1885/35935
dc.publisherInstitute of Physics Publishing
dc.sourceNanotechnology
dc.subjectKeywords: Crystals; Dielectric materials; Lead compounds; Light absorption; Photoluminescence; Spectroscopy; Synthesis (chemical); Biological imaging; Energy relaxation; Ligands; Quantum confinement; Nanostructured materials
dc.titleTime-resolved photoluminescence spectroscopy of ligand-capped PbS nanocrystals
dc.typeJournal article
local.bibliographicCitation.issue2
local.bibliographicCitation.lastpage179
local.bibliographicCitation.startpage175
local.contributor.affiliationWarner, Jamie H., University of Queensland
local.contributor.affiliationThomsen, Elizabeth, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationWatt, Andrew, University of Queensland
local.contributor.affiliationHeckenberg, Norman Richard, University of Queensland
local.contributor.affiliationRubinsztein-Dunlop, Halina, University of Queensland
local.contributor.authoruidThomsen, Elizabeth, u4053233
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor020404 - Electronic and Magnetic Properties of Condensed Matter; Superconductivity
local.identifier.ariespublicationu4222028xPUB130
local.identifier.citationvolume16
local.identifier.doi10.1088/0957-4484/16/2/001
local.identifier.scopusID2-s2.0-14044272699
local.type.statusPublished Version

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