A Phonon Scattering Bottleneck for Carrier ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
A Phonon Scattering Bottleneck for Carrier Cooling in Lead Chalcogenide Nanocrystals
Author(s) :
Geiregat, Pieter [Auteur]
Department of Information Technology [INTEC]
Delerue, Christophe [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Justo, Yolanda [Auteur]
Aerts, Michiel [Auteur]
Spoor, Frank [Auteur]
van Thourhout, Dries [Auteur]
Department of Information Technology [INTEC]
Siebbeles, Laurens [Auteur]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Houtepen, Arjan [Auteur]
Hens, Zeger [Auteur]
Department of Information Technology [INTEC]
Delerue, Christophe [Auteur]
![refId](/themes/Mirage2//images/idref.png)
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Justo, Yolanda [Auteur]
Aerts, Michiel [Auteur]
Spoor, Frank [Auteur]
van Thourhout, Dries [Auteur]
Department of Information Technology [INTEC]
Siebbeles, Laurens [Auteur]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Houtepen, Arjan [Auteur]
Hens, Zeger [Auteur]
Journal title :
ACS Nano
Pages :
778-788
Publisher :
American Chemical Society
Publication date :
2015-01-02
ISSN :
1936-0851
English keyword(s) :
PbS
PbSe
quantum dots
transient absorption spectroscopy
electron−phonon interaction
multiple exciton generation
PbSe
quantum dots
transient absorption spectroscopy
electron−phonon interaction
multiple exciton generation
HAL domain(s) :
Physique [physics]
Physique [physics]/Matière Condensée [cond-mat]
Physique [physics]/Matière Condensée [cond-mat]
English abstract : [en]
The cooling dynamics of hot charge carriers in colloidal lead chalcogenide nanocrystals is studied by hyperspectral transient absorption spectroscopy. We demonstrate a transient accumulation of charge carriers at a high ...
Show more >The cooling dynamics of hot charge carriers in colloidal lead chalcogenide nanocrystals is studied by hyperspectral transient absorption spectroscopy. We demonstrate a transient accumulation of charge carriers at a high energy critical point in the Brillouin zone. Using a theoretical study of the cooling rate in lead chalcogenides, we attribute this slowing down of charge carrier cooling to a phonon scattering bottleneck around this critical point. The relevance of this observation for the possible harvesting of the excess energy of hot carriers by schemes such as multiexciton generation is discussed.Show less >
Show more >The cooling dynamics of hot charge carriers in colloidal lead chalcogenide nanocrystals is studied by hyperspectral transient absorption spectroscopy. We demonstrate a transient accumulation of charge carriers at a high energy critical point in the Brillouin zone. Using a theoretical study of the cooling rate in lead chalcogenides, we attribute this slowing down of charge carrier cooling to a phonon scattering bottleneck around this critical point. The relevance of this observation for the possible harvesting of the excess energy of hot carriers by schemes such as multiexciton generation is discussed.Show less >
Language :
Anglais
Popular science :
Non
Source :
Files
- http://hdl.handle.net/1854/LU-5986674
- Open access
- Access the document
- LU-5986674
- Open access
- Access the document