Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/20776
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ruivo, Andreia | pt |
dc.contributor.author | Andrade, Suzana M. | pt |
dc.contributor.author | Rocha, Joao | pt |
dc.contributor.author | Laia, Cesar A. T. | pt |
dc.contributor.author | Pina, Fernando | pt |
dc.date.accessioned | 2017-12-07T19:59:01Z | - |
dc.date.issued | 2014 | pt |
dc.identifier.issn | 1932-7447 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20776 | - |
dc.description.abstract | A multicomponent aluminoborosilicate photoluminescent glass was synthesized by introducing Pb(II) and NaBr in its composition. The room-temperature photoluminescence is due to the existence of 4 nm nanocrystals, shown using TEM imaging and XRD analysis, which are assigned to PbBr2 nanocrystals. The glasses display a broad emission band with a peak at 2.85 eV by exciting at 3.35 eV, with an anisotropy equal to 0.19 at room temperature. At 77 K, the emission intensity increases 1 order of magnitude and a vibronic structure appears, indicating an electron-phonon coupling with the glass matrix. Time-resolved luminescence measurements of these nanocrystals reveal mixed-order kinetics, with second-order recombination of self-trapped electron centers and a first-order temperature-dependent nonradiative rate constant connected with pathways due to confinement of self-trapped centers. | pt |
dc.language.iso | eng | pt |
dc.publisher | AMER CHEMICAL SOC | pt |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/310651/EU | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132972/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/67354/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/118520/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F46659%2F2008/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | HALIDE PHOTOCHROMIC-GLASSES | pt |
dc.subject | SILICATE-GLASSES | pt |
dc.subject | ELECTRON-TRANSFER | pt |
dc.subject | BORATE GLASSES | pt |
dc.subject | RAMAN | pt |
dc.subject | LUMINESCENCE | pt |
dc.subject | MELTS | pt |
dc.subject | MECHANISM | pt |
dc.subject | SPECTROSCOPY | pt |
dc.subject | CRYSTALS | pt |
dc.title | Formation of Photoluminescent Lead Bromide Nanoparticles on Aluminoborosilicate Glass | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 12436 | pt |
degois.publication.issue | 23 | pt |
degois.publication.lastPage | 12442 | pt |
degois.publication.title | JOURNAL OF PHYSICAL CHEMISTRY C | pt |
degois.publication.volume | 118 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1021/jp5003758 | pt |
dc.identifier.doi | 10.1021/jp5003758 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Formation of Photoluminescent Lead Bromide Nanoparticles on Aluminoborosilicate Glass_10.1021jp5003758.pdf | 277.25 kB | Adobe PDF |
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