Title :
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
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;
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
DOI :
10.1109/CLEO.2002.1034438
