Exciton confinement on a spherical shell

Visible photoluminescence from oxidized Si and Ge nanoballs

Yoshihiko Kanemitsu, Tetsuo Ogawa, Kenji Shiraishi, Kyozaburo Takeda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report strong visible photoluminescence (PL) at room temperature from oxidized Si and Ge nanoballs, which are composed of a spherical crystalline core and a surface oxide layer. To explain the experimental results, a model is proposed in which excitons are confined to a spherical shell, an interfacial layer between the crystalline core and the surface oxide layer, and in which the exciton confinement enhances the PL intensity.

Original languageEnglish
Pages (from-to)337-339
Number of pages3
JournalJournal of Luminescence
Volume60-61
Issue numberC
DOIs
Publication statusPublished - 1994
Externally publishedYes

Fingerprint

spherical shells
Oxides
Photoluminescence
excitons
Crystalline materials
photoluminescence
oxides
Temperature
room temperature
LDS 751

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Atomic and Molecular Physics, and Optics

Cite this

Exciton confinement on a spherical shell : Visible photoluminescence from oxidized Si and Ge nanoballs. / Kanemitsu, Yoshihiko; Ogawa, Tetsuo; Shiraishi, Kenji; Takeda, Kyozaburo.

In: Journal of Luminescence, Vol. 60-61, No. C, 1994, p. 337-339.

Research output: Contribution to journalArticle

Kanemitsu, Yoshihiko ; Ogawa, Tetsuo ; Shiraishi, Kenji ; Takeda, Kyozaburo. / Exciton confinement on a spherical shell : Visible photoluminescence from oxidized Si and Ge nanoballs. In: Journal of Luminescence. 1994 ; Vol. 60-61, No. C. pp. 337-339.
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