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Electroabsorption spectra of PbSe nanocrystal quantum dots
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 | electroabsorption | excitons | 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 https://dx.doi.org/10.1063/1.3583450 |
Type: | article |
URI: | http://hdl.handle.net/2115/45542 |
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)
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Submitter: 太田 信廣
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