Linear dichroism of CdSe nanodots: Large anisotropy of the band-gap absorption induced by ground-state dipole moments
2008
Abstract
The authors measured the elec. field induced linear dichroism for a wide range of sizes of CdSe nanocrystals. Large ground-state dipole moments were obsd., esp. for the smallest crystals. In these, the authors found a very large anisotropy of the absorption and most of the dipole strength is along the direction of the ground-state dipole moment. For the anisotropy, the authors propose a mechanism for intensity borrowing from intraband transitions, induced by the field of the ground-state dipole moment.
Details
Title
Linear dichroism of CdSe nanodots: Large anisotropy of the band-gap absorption induced by ground-state dipole moments
Author(s)
van Mourik, Frank ; Giraud, Gerard ; Tonti, Dino ; Chergui, Majed ; van der Zwan, Gert
Published in
Physical Review B
Volume
77
Issue
16
Pages
165303/1-165303/6
Date
2008
Keywords
Electronic transition (intraband; in linear dichroism of; CdSe nanocrystal with large anisotropy of band-gap; absorption induced by ground-state dipole moments); Dichroism; Nanocrystals; Optical absorption; Optical; anisotropy (linear dichroism of CdSe nanocrystal with large; anisotropy of band-gap absorption induced by ground-state; dipole moments); UV and visible spectra (of linear dichroism; of CdSe nanocrystal with large anisotropy of band-gap; absorption induced by ground-state dipole moments); cadmium selenide nanocrystal visible dichroism anisotropy; band gap absorption; absorption induced by ground-state dipole moments)
Note
CAN 149:114617 73-4 Optical, Electron, and Mass Spectroscopy and Other Related Properties Institut de Sciences et Ingenierie Chimiques, FSB-BSP, Laboratory of Ultrafast Spectroscopy,Ecole Polytechnique Federale de Lausanne,Lausanne-Dorigny,Switz. Journal 1098-0121 written in English. 1306-24-7 (Cadmium selenide) Role: PRP (Properties) (linear dichroism of CdSe nanocrystal with large anisotropy of band-gap absorption induced by ground-state dipole moments)
Other identifier(s)
DAR: 12446
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Laboratories
LSU
Record Appears in
Scientific production and competences > SB - School of Basic Sciences > ISIC - Institute of Chemical Sciences and Engineering > LSU - Laboratory of Ultrafast Spectroscopy
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date
2009-03-18