Emission characterization of a single CdSe-ZnS nanocrystal with high temporal and spectral resolution by photon-correlation fourier spectroscopy

被引：58

作者：

Coolen, L. ^{[1
]}

Brokmann, X. ^{[2
]}

Spinicelli, P. ^{[1
]}

Hermier, J. -P. ^{[1
,3
]}

机构：

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

[2] Inst Elect Microelect & Nanotechnol, F-59652 Villeneuve Dascq, France

[3] Univ Versailles St Quentin En Yvelines, UFR Sci, Grp Etud Mat Condensee, F-78035 Versailles, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.100.027403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a spectroscopic study of single colloidal CdSe/ZnS nanocrystals at low temperature. We use photon-correlation Fourier spectroscopy, a technique based on measuring the correlations of the intensities detected at the outputs of a Michelson interferometer. Spectral diffusion over a few mu eV is evidenced, on a typical time scale of 200 mu s. A time resolution as high as 20 mu s is obtained, and an upper limit of 6.5 mu eV emission linewidth is measured, corresponding to a coherence time of at least 200 ps, similar to the values for epitaxial quantum dots.

引用

页数：4

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