Title :
Fluorescence properties of thick shell CdSe/CdS quantum dots at cryogenic temperature
Author :
Camps, G. ; Buil, S. ; Quélin, X. ; Javaux, C. ; Mahler, B. ; Dubertret, B. ; Hermier, J-P
Author_Institution :
Groupe d´´Etudes de la Mater. Condensee, Univ. de Versailles St Quentin-en-Yvelines, Versailles, France
Abstract :
In this paper, we present the fluorescence properties of thick shells CdSe/CdS QDs at 4K. Using a standard confocal microscope and a photon counting setup, we developed an original method to obtain the full time statistics of the photons emitted by an individual QD. Our data provides the histogram of the delays between photons, the fluorescence lifetime and the fluorescence intensity fluctuations with time. Our results demonstrate that the fluorescence properties of CdSe/CdS QDs are drastically changed at cryogenic temperature.
Keywords :
II-VI semiconductors; cadmium compounds; fluorescence; optical microscopy; semiconductor quantum dots; CdSe-CdS; cryogenic temperature; fluorescence intensity fluctuations; fluorescence lifetime; fluorescence properties; full time statistics; photon counting; quantum dots; standard confocal microscope; thick shell; Fluorescence; Lead; Photonics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4577-0533-5
Electronic_ISBN :
Pending
DOI :
10.1109/CLEOE.2011.5943586
