Emission spectrum and spectral diffusion of a single CdSe/ZnS nanocrystal measured by photon-correlation Fourier spectroscopy

被引：10

作者：

Coolen, L. ^{[1
,2
,3
]}

Spinicelli, P. ^{[1
]}

Hermier, J. -P. ^{[1
,4
]}

机构：

[1] Univ Paris 06, CNRS, Ecole Normale Super, Lab Kastler Brossel, F-75231 Paris 05, France

[2] Univ Paris 06, UMR 7588, INSP, F-75015 Paris, France

[3] INSP, UMR7588, CNRS, F-75015 Paris, France

[4] Univ Versailles, UFR Sci, Grp Etude Mat Condensee, F-78035 Versailles, France

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS | 2009年 / 26卷 / 07期

关键词：

QUANTUM DOTS; FLUORESCENCE INTERMITTENCY; 2-LEVEL SYSTEMS; MOLECULES; POLYMER;

D O I：

10.1364/JOSAB.26.001463

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We describe a detailed photon correlation Fourier spectroscopy (PCFS) study of a single CdSe/ZnS nanocrystal at 10 K. PCFS provides the temporal and spectral resolution that is necessary for such a fast spectrally diffusing emitter. In the emitter spectrum, we distinguish a main 6 mu eV zero-phonon line, the one- and two-longitudinal-optical-phonon replica, and the longitudinal-acoustic-phonon pedestal. We determine the spectral diffusion amplitude as a function of time for timescales from 20 mu s to 200 ms and propose an interpretation for the two observed regimes. (C) 2009 Optical Society of America

引用

页码：1463 / 1468

页数：6

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