Photothermal Absorption Spectroscopy of Individual Semiconductor Nanocrystals

Preprint

28 April 2007

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0704.3815

Abstract

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.

Keywords

SEMICONDUCTOR NANOCRYSTALS
INDIVIDUAL SEMICONDUCTOR
PHOTOTHERMAL ABSORPTION
ABSORPTION SPECTROSCOPY
PHOTOLUMINESCENCE
HETERODYNE

All Related Versions

Version 1, 2007-04-28, ArXiv
Published version: Nano Letters, 5 (11), 2160.

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