Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111944
Title: Excitons and Photoluminescence in ZnO and Zn0.99Mn 0.01O Nanocrystals
Authors: Gruzdev, N. B.
Sokolov, V. I.
Ermakov, A. E.
Uimin, M. A.
Mysik, A. A.
Pustovarov, V. A.
Issue Date: 2010
Publisher: Pleiades Publishing Ltd
Citation: Excitons and Photoluminescence in ZnO and Zn0.99Mn 0.01O Nanocrystals / N. B. Gruzdev, V. I. Sokolov, A. E. Ermakov et al. // Journal of Experimental and Theoretical Physics. — 2010. — Vol. 111. — Iss. 2. — P. 231-235.
Abstract: The photoluminescence and photoluminescence excitation spectra for Zn 1-x Mn x O nanocrystals are presented. After annealing of powders in air, the intensity of the bands attributable to manganese decreases noticeably. This suggests that the oxygen vacancies affect the Zhang-Rice-like states appearing due to strong d-p-hybridization, which is confirmed by an increase in the band gap of Zn1-x Mn x O for low x. The origin of the 2.9-eV peak and the shape of its excitation spectrum are discussed qualitatively. For Zn1-x Mn x O nanocrystals, the shape of the excitation spectrum is as unusual as the intense absorption in the range (2.2-3.0) eV. © 2010 Pleiades Publishing, Ltd.
Keywords: BAND GAPS
EXCITATION SPECTRUM
PHOTOLUMINESCENCE EXCITATION SPECTRUM
ZHANG-RICE
ZNO
ABSORPTION SPECTROSCOPY
EXCITED STATES
MANGANESE COMPOUNDS
NANOCRYSTALS
OXYGEN
OXYGEN VACANCIES
PHOTOLUMINESCENCE
ZINC
ZINC OXIDE
MANGANESE
URI: http://hdl.handle.net/10995/111944
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 77958100036
ISSN: 1063-7761
metadata.dc.description.sponsorship: We wish to thank T. Dietl, V.I. Anisimov, and A.V. Lukoyanov for the discussion of localized states in the Zn1–xMnxO system. This work was supported by the Russian Foundation for Basic Research (project nos. 07 02 00910_a and 08 02 99080r ofi), and Russian Federal Agency on Science and Innovations (grant no. 02.740.11.0217).
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