Observation of size-dependent features in the photoluminescence of ZnO nanocrystallites by near-field UV spectroscopy

Author

Yatsui, T. ; Kawazoe, T. ; Ueda, M. ; Kourogi, M. ; Ohtsu, M. ; Lee, G.H.

Author_Institution

ERATO, Japan Sci. & Technol. Corp., Tokyo, Japan

fYear

2002

fDate

24-24 May 2002

Firstpage

651

Abstract

Summary from only given. To evaluate the optical properties and crystallinity of ZnO nanocrystallites, the optical properties must be measured with nanometer-scale resolution. Using a UV optical near-field technique, we observed size-dependent features of individual ZnO nanocrystallites. We show a far-field photoluminescence spectrum at room temperature. The emission peak energy corresponds to spontaneous emission from the free exciton in high-quality ZnO nanocrystallites.

Keywords

excitons; nanostructured materials; photoluminescence; spontaneous emission; ultraviolet spectra; ultraviolet spectroscopy; zinc compounds; ZnO; ZnO nanocrystallites; crystallinity; free exciton; near-field UV spectroscopy; optical near-field technique; optical properties; photoluminescence; size-dependent features; spontaneous emission; Excitons; Fluorescence; Materials science and technology; Power engineering and energy; Probes; Temperature; Testing; Turning; Wavelength measurement; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the

Conference_Location

Long Beach, CA, USA

Print_ISBN

1-55752-706-7

Type

conf

DOI

10.1109/CLEO.2002.1034438

Filename

1034438