Spectroscopic and structural characterization of electrochemically grown ZnO quantum dots

Authors
Mahamuni, S Borgohain, K Bendre, BS Leppert, VJ Risbud, SH
Citation
S. Mahamuni et al., Spectroscopic and structural characterization of electrochemically grown ZnO quantum dots, J APPL PHYS, 85(5), 1999, pp. 2861-2865
Citations number
34
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF APPLIED PHYSICS
ISSN journal
00218979 → ACNP
Volume
85
Issue
5
Year of publication
1999
Pages
2861 - 2865
Database
ISI
SICI code
0021-8979(19990301)85:5<2861:SASCOE>2.0.ZU;2-9
Abstract
We report a novel method for the synthesis of stable, OH free zinc oxide qu antum dots, using an electrochemical route. The optical properties of these quantum dots were studied at room temperature, by taking the optical absor ption and luminescence spectra. The band gap luminescence is predominant in ZnO quantum dots synthesized by the present technique, while the green def ect induced luminescence, typical of ZnO, is strongly quenched. The role of defects in photoluminescence emission is discussed. (C) 1999 American Inst itute of Physics. [S0021-8979(99)05505-X].