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|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.
|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.|
PHOTOLUMINESCENCE EXCITATION SPECTRUM
|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).|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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