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Modified spontaneous emission of silicon nanocrystals embedded in artificial opals

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dc.contributor.authorJanda, Petr
dc.contributor.authorValenta, Jan
dc.contributor.authorRehspringer, Jean-Luc
dc.contributor.authorMafouana, Rodrigue R
dc.contributor.authorLinnros, Jan
dc.contributor.authorElliman, Robert
dc.date.accessioned2015-12-07T22:44:22Z
dc.date.issued2007
dc.date.updated2015-12-07T11:24:04Z
dc.description.abstractSi nanocrystals (NCs) were embedded in synthetic silica opals by means of Si-ion implantation or opal impregnation with porous-Si suspensions. In both types of sample photoluminescence (PL) is strongly Bragg-reflection attenuated (up to 75%) at the frequency of the opal stop-band in a direction perpendicular to the (1 1 1) face of the perfect hcp opal structure. Time-resolved PL shows a rich distribution of decay rates, which contains both shorter and longer decay components compared with the ordinary stretched exponential decay of Si NCs. This effect reflects changes in the spontaneous emission rate of Si NCs due to variations in the local density of states of real opal containing defects.
dc.identifier.issn0022-3727
dc.identifier.urihttp://hdl.handle.net/1885/25156
dc.publisherInstitute of Physics Publishing
dc.sourceJournal of Physics D: Applied Physics
dc.subjectKeywords: Band structure; Photoluminescence; Silicon; Spontaneous emission; Decay rates; Density of states; Exponential decay; Opal structures; Nanocrystals
dc.titleModified spontaneous emission of silicon nanocrystals embedded in artificial opals
dc.typeJournal article
local.bibliographicCitation.lastpage5853
local.bibliographicCitation.startpage5847
local.contributor.affiliationJanda, Petr, Charles University (Czech)
local.contributor.affiliationValenta, Jan, Charles University (Czech)
local.contributor.affiliationRehspringer, Jean-Luc, CNRS-ULP-ECPM
local.contributor.affiliationMafouana, Rodrigue R, CNRS-ULP-ECPM
local.contributor.affiliationLinnros, Jan, Royal Institute of Technology
local.contributor.affiliationElliman, Robert, College of Physical and Mathematical Sciences, ANU
local.contributor.authoruidElliman, Robert, u9012877
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.identifier.absfor100799 - Nanotechnology not elsewhere classified
local.identifier.ariespublicationu8709800xPUB36
local.identifier.citationvolume40
local.identifier.doi10.1088/0022-3727/40/19/008
local.identifier.scopusID2-s2.0-34748907461
local.type.statusPublished Version

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