Density of states measured by scanning-tunneling ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Density of states measured by scanning-tunneling spectroscopy sheds new light on the optical transitions in PbSe nanocrystals
Author(s) :
Liljeroth, Peter [Auteur]
University of Applied Sciences [Utrecht] [HU]
Zeijlmans van Emmichoven, P.A. [Auteur]
University of Applied Sciences [Utrecht] [HU]
Hickey, Stephen G. [Auteur]
Hamburg University of Applied Sciences [Hamburg]
Weller, Horst [Auteur]
Hamburg University of Applied Sciences [Hamburg]
Grandidier, Bruno [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vanmaekelbergh, Daniel [Auteur]
University of Applied Sciences [Utrecht] [HU]
University of Applied Sciences [Utrecht] [HU]
Zeijlmans van Emmichoven, P.A. [Auteur]
University of Applied Sciences [Utrecht] [HU]
Hickey, Stephen G. [Auteur]
Hamburg University of Applied Sciences [Hamburg]
Weller, Horst [Auteur]
Hamburg University of Applied Sciences [Hamburg]
Grandidier, Bruno [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Allan, Guy [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vanmaekelbergh, Daniel [Auteur]
University of Applied Sciences [Utrecht] [HU]
Journal title :
Physical Review Letters
Pages :
086801/1-4
Publisher :
American Physical Society
Publication date :
2005
ISSN :
0031-9007
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
The density-of-states function of individual colloidal PbSe nanocrystals varying in diameter between 3 and 7 nm is measured by resonant tunneling spectroscopy. It is in semiquantitative agreement with tight-binding ...
Show more >The density-of-states function of individual colloidal PbSe nanocrystals varying in diameter between 3 and 7 nm is measured by resonant tunneling spectroscopy. It is in semiquantitative agreement with tight-binding calculations, but the energy separation between electron (hole) levels of S and P symmetry is systematically smaller than predicted by the theory. These results provide an explanation for the second and third excitonic optical transitions, which have been debated for a long time.Show less >
Show more >The density-of-states function of individual colloidal PbSe nanocrystals varying in diameter between 3 and 7 nm is measured by resonant tunneling spectroscopy. It is in semiquantitative agreement with tight-binding calculations, but the energy separation between electron (hole) levels of S and P symmetry is systematically smaller than predicted by the theory. These results provide an explanation for the second and third excitonic optical transitions, which have been debated for a long time.Show less >
Language :
Anglais
Popular science :
Non
Source :