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Title: Effect of self-organization, defects, impurities, and autocatalytic processes on the parameters of ZnO films and nanorods

The effects of the parameters of ZnO-film deposition onto different substrates using the method of ac magnetron sputtering in a gas mixture of argon and oxygen hare studied. The phenomenon of self-organization is observed, which leads to invariability of the surface morphology of the ZnO films upon a variation in the substrate materials and deposition parameters. The parameters of the macro- and micro-photoluminescence spectra of the films differ insignificantly from the parameters of the photoluminescence spectra of bulk ZnO crystals obtained by the method of hydrothermal growth. The presence of intense emission with a narrow full-width at half-maximum (FWHM) in different regions of the spectrum allows ZnO films obtained by magnetron sputtering doped with rare-earth metal impurities (REIs) to be considered as a promising material for the creation of optoelectronic devices working in a broad spectral range. The possibility of the implementation of magnetic ordering upon legierung with REIs significantly broadens the functional possibilities of ZnO films. The parameters of the photoluminescence spectra of ZnO nanorods are determined by their geometrical parameters and by the concentration and type of the impurities introduced.
Authors:
;  [1] ;  [2] ; ;  [1] ; ;  [3]
  1. Russian Academy of Sciences, Ioffe Physical–Technical Institute (Russian Federation)
  2. Saint-Petersburg State Electrotechnical University (LETI) (Russian Federation)
  3. Southern Federal University (Russian Federation)
Publication Date:
OSTI Identifier:
22469693
Resource Type:
Journal Article
Resource Relation:
Journal Name: Semiconductors; Journal Volume: 49; Journal Issue: 11; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ARGON; CONCENTRATION RATIO; CRYSTALS; DEPOSITION; DOPED MATERIALS; EMISSION SPECTRA; FILMS; IMPURITIES; MAGNETIZATION; MORPHOLOGY; NANOSTRUCTURES; OPTOELECTRONIC DEVICES; PHOTOLUMINESCENCE; RARE EARTHS; SPUTTERING; SUBSTRATES; SURFACES; ZINC OXIDES