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Electroabsorption spectra of PbSe nanocrystal quantum dots

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Title: Electroabsorption spectra of PbSe nanocrystal quantum dots
Authors: Liu, Xiaoming Browse this author
Iimori, Toshifumi Browse this author
Ohshima, Ruriko Browse this author
Nakabayashi, Takakazu Browse this author
Ohta, Nobuhiro Browse this author
Keywords: electric moments
infrared spectra
IV-VI semiconductors
lead compounds
nanostructured materials
quantum confined Stark effect
semiconductor quantum dots
Issue Date: 18-Apr-2011
Publisher: American Institute of Physics
Journal Title: Applied Physics Letters
Volume: 98
Issue: 16
Start Page: 161911
Publisher DOI: 10.1063/1.3583450
Abstract: The quantum-confined Stark effect of PbSe nanocrystal quantum dots (QDs) in a polymer film has been studied for the near-infrared absorption in the region of 1300-1600 nm (corresponding to diameters of 4.0-7.0 nm) by using electric field modulation spectroscopy. Electroabsorption spectra of QDs show the electric-field-induced energy shift in the exciton state, resulting in the spectral broadening given by the second derivative of the absorption spectra. It is shown that the magnitude of the change in electric dipole moment following excitation into the first exciton state increases with an increase in the size of QDs.
Rights: Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 98, 161911 (2011) and may be found at
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 太田 信廣

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