Photoluminescence spectrum of highly excited single CdS nanocrystals studied by a scanning near-field optical microscope

Yoshihiko Kanemitsu, Takeshi J. Inagaki, Masanobu Ando, Kazunari Matsuda, Toshiharu Saiki, C. W. White

研究成果: Article査読

17 被引用数 (Scopus)

抄録

Many-body effects in strongly photoexcited single CdS nanocrystals embedded in Al2O3 matrices have been studied by a scanning near-field optical microscope at low temperatures. Under weak excitations, we find a sharp photoluminescence (PL) band originating from the exciton recombination. With an increase of the excitation laser energy, the PL intensity increases and the broad PL band is superimposed on the exciton-related sharp PL band. From a theoretical analysis, it was concluded that the broadening of the PL band is due to electron-hole pairs in CdS nanocrystals. The many-body effects of correlated exciton systems in CdS nanocrystals will be discussed.

本文言語English
ページ(範囲)141-143
ページ数3
ジャーナルApplied Physics Letters
81
1
DOI
出版ステータスPublished - 2002 7 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

フィンガープリント

「Photoluminescence spectrum of highly excited single CdS nanocrystals studied by a scanning near-field optical microscope」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