Photothermal absorption spectroscopy of individual semiconductor nanocrystals

被引：84

作者：

Berciaud, S

Cognet, L

Lounis, B

机构：

[1] CNRS, Ctr Phys Mol Opt & Hertzienne, UMR 5798, F-33405 Talence, France

[2] Univ Bordeaux 1, F-33405 Talence, France

来源：

NANO LETTERS | 2005年 / 5卷 / 11期

关键词：

D O I：

10.1021/nl051805d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photothermal heterodyne detection is used to record the first room-temperature absorption spectra of single CdSe/ZnS semiconductor nanocrystals. These spectra are recorded in the high cw excitation regime, and the observed bands are assigned to transitions involving biexciton and trion states. Comparison with the single nanocrystals photoluminescence spectra leads to the measurement of spectral Stokes shifts free from ensemble averaging.

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页码：2160 / 2163

页数：4

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