Excitonic molecule in a quantum dot: Photoluminescence lifetime of a single InAs GaAs quantum dot

Shunsuke Kono*, Akihiro Kirihara, Akihisa Tomita, Kazuo Nakamura, Junichi Fujikata, Keishi Ohashi, Hideaki Saito, Kenichi Nishi

*この研究の対応する著者

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Time dependence of the photoluminescence (PL) attributed to the exciton and biexciton in a single InAs GaAs quantum dot is investigated at 4.3K with microscopic spectroscopy. Dynamical behavior of the PL decay and the excitation intensity dependence of the exciton and biexciton PL are analyzed by rate equations assuming a cascading recombination from the biexciton to exciton state. The analysis shows that the biexciton lifetime is longer than the exciton lifetime. The estimated ratio of the biexciton lifetime to the exciton lifetime shows a molecular nature of the biexciton in the large quantum dots compared with the exciton Bohr radius.

本文言語English
論文番号155307
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
72
15
DOI
出版ステータスPublished - 2005 10 15
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「Excitonic molecule in a quantum dot: Photoluminescence lifetime of a single InAs GaAs quantum dot」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル