Electroabsorption spectra of PbSe nanocrystal quantum dots

Xiaoming Liu, Toshifumi Iimori, Ruriko Ohshima, Takakazu Nakabayashi, Nobuhiro Ohta

研究成果: Article査読

15 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号161911
ジャーナルApplied Physics Letters
98
16
DOI
出版ステータスPublished - 2011 4 18
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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