1996年12月
Photoluminescence properties of surface-oxidized Ge nanocrystals: Surface localization of excitons
PHYSICAL REVIEW B
- ,
- 巻
- 54
- 号
- 23
- 開始ページ
- 16421
- 終了ページ
- 16424
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.54.16421
- 出版者・発行元
- AMERICAN PHYSICAL SOC
We have studied photoluminescence (PL) properties of surface-oxidized Ge nanocrystals with a 3.7 nm diameter. A difference between the absorption and PL excitation spectra and time-resolved PL measurements show that the site for the radiative recombination of excitons is different from that for the photogeneration of excitons. From fine structures in resonantly excited PL spectra at low temperatures, we concluded that excitons are localized on the surface of Ge nanocrystals and that the strong coupling of excitons with local vibrations of germanium oxides at the surface cause these fine structures.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevB.54.16421
- ISSN : 0163-1829
- Web of Science ID : WOS:A1996WA83300030