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DC Field | Value | Language |
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dc.contributor.author | den Engelsen, D | - |
dc.contributor.author | Harris, PG | - |
dc.contributor.author | Ireland, TG | - |
dc.contributor.author | Fern, G | - |
dc.contributor.author | Silver, J | - |
dc.date.accessioned | 2016-02-22T11:47:14Z | - |
dc.date.available | 2015-01-01 | - |
dc.date.available | 2016-02-22T11:47:14Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | ECS Journal of Solid State Science and Technology, 4(12): R145 - R152, (2015) | en_US |
dc.identifier.issn | 2162-8769 | - |
dc.identifier.uri | http://jss.ecsdl.org/content/4/12/R145.abstract | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/12153 | - |
dc.description.abstract | Herein the photoluminescence spectra of nanosized cubic Y2O3:Tb3+ having Tb3+ concentrations varying between 0.1 and 10 Mol% are described. Low temperature cathodoluminescence spectra from these materials recorded in a scanning transmission electron microscope are presented and discussed. By studying the photoluminescence-spectra recorded at room temperature and focused on the 5D4→7F5 (C2) and 5D4→7F5 (C3i) transitions, at 542.8 and 544.4 nm respectively, it was found that the critical distance for energy transfer from Tb3+ ions at C3i lattice sites to Tb3+ ions at C2 lattice sites was 1.7 nm; at distances >1.7 nm, which prevail at low Tb3+ concentration, this energy transfer virtually stops. The gradual change of the excitation spectra upon increasing the Tb3+ concentration is also explained in terms of energy transfer from Tb3+ at C3i sites to Tb3+ at C2 sites. Cathodoluminescence spectra recorded at low temperatures with the scanning transmission electron microscope provided additional evidence for this radiationless energy transfer. | en_US |
dc.description.sponsorship | We are grateful to the EPSRC and the Technology Strategy Board (TSB) for funding the PURPOSE (TP11/MFE/6/I/AA129F; EPSRCTS/G000271/1) and CONVERTED (JeS no. TS/1003053/1) programs. The TSB funded the CONVERT program. | en_US |
dc.format.extent | R145 - R152 (8) | - |
dc.language | English | - |
dc.language.iso | en | en_US |
dc.publisher | The Electrochemical Society | en_US |
dc.subject | Deconvolution | en_US |
dc.subject | Energy transfer | en_US |
dc.subject | Excitation spectrum | en_US |
dc.subject | Low temperature | en_US |
dc.title | Symmetry-related transitions in the photoluminescence and cathodoluminescence spectra of nanosized cubic Y2O3:Tb3+ | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1149/2.0011512jss | - |
dc.relation.isPartOf | ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY | - |
pubs.issue | 12 | - |
pubs.publication-status | Published | - |
pubs.publication-status | Published | - |
pubs.volume | 4 | - |
Appears in Collections: | Wolfson Centre for Sustainable Materials Development and Processing |
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Fulltext.pdf | 1.87 MB | Adobe PDF | View/Open |
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