The optical phonon spectrum of CdSe colloidal quantum dots
| hal.structure.identifier | lp2n-01,lp2n-12 | |
| dc.contributor.author | FERNÉE, Mark J. | |
| hal.structure.identifier | lp2n-01,lp2n-12 | |
| dc.contributor.author | SINITO, Chiara | |
| hal.structure.identifier | School of Chemistry [Melbourne] | |
| dc.contributor.author | MULVANEY, Paul | |
| hal.structure.identifier | lp2n-01,lp2n-12 | |
| dc.contributor.author | TAMARAT, Philippe | |
| hal.structure.identifier | lp2n-01,lp2n-12 | |
| dc.contributor.author | LOUNIS, Brahim | |
| dc.date.accessioned | 2023-05-12T11:02:05Z | |
| dc.date.available | 2023-05-12T11:02:05Z | |
| dc.date.created | 2014-05-09 | |
| dc.date.issued | 2014-08-28 | |
| dc.identifier.issn | 1463-9076 | |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/182066 | |
| dc.description.abstractEn | The direct coupling of excited electronic states to optical phonons in single CdSe colloidal quantum dots is explored using both photoluminescence emission and excitation spectroscopies. We find a broad optical phonon spectrum associated with a single fine structure state. Multiple peaks in the optical phonon sideband are ascribed to different optical phonon types emanating from both the core and shell layers. A mixed emission process that involves the simultaneous generation of two different types of optical phonon is also observed. In general, rather than a single mode, each designated phonon type is associated with a dispersed family of modes. Narrow optical phonon sidebands, consistent with the dominant LO mode, are observed in some nanocrystals. A linewidth analysis indicates that optical phonon lifetimes are in the 10 picosecond range. We demonstrate the ability to selectively excite a specific band-edge state by directly exciting its LO phonon sideband. | |
| dc.language.iso | en | |
| dc.publisher | Royal Society of Chemistry | |
| dc.subject.en | INTRABAND RELAXATION | |
| dc.subject.en | NANOCRYSTALS | |
| dc.subject.en | EXCITON | |
| dc.subject.en | PHOTOLUMINESCENCE | |
| dc.subject.en | SPECTROSCOPY | |
| dc.subject.en | BOTTLENECK | |
| dc.subject.en | EMISSION | |
| dc.subject.en | ENERGY | |
| dc.title.en | The optical phonon spectrum of CdSe colloidal quantum dots | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1039/c4cp02 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Autre [cond-mat.other] | |
| bordeaux.journal | Physical Chemistry Chemical Physics | |
| bordeaux.page | 16957-16961 | |
| bordeaux.volume | 16 | |
| bordeaux.hal.laboratories | Laboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298 | * |
| bordeaux.issue | 32 | |
| bordeaux.institution | Université de Bordeaux | |
| bordeaux.institution | CNRS | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01061208 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01061208v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Chemistry%20Chemical%20Physics&rft.date=2014-08-28&rft.volume=16&rft.issue=32&rft.spage=16957-16961&rft.epage=16957-16961&rft.eissn=1463-9076&rft.issn=1463-9076&rft.au=FERN%C3%89E,%20Mark%20J.&SINITO,%20Chiara&MULVANEY,%20Paul&TAMARAT,%20Philippe&LOUNIS,%20Brahim&rft.genre=article |
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