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

fYear

2011

fDate

22-26 May 2011

Firstpage

1

Lastpage

1

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics Europe (CLEO EUROPE/EQEC), 2011 Conference on and 12th European Quantum Electronics Conference

Conference_Location

Munich

ISSN

Pending

Print_ISBN

978-1-4577-0533-5

Electronic_ISBN

Pending

Type

conf

DOI

10.1109/CLEOE.2011.5943586

Filename

5943586