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Structure, Chemistry and Luminescence Properties of Dielectric LaxHf1-xOy Films Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Materials Chemistry and Physics
ISSN: 0254-0584 , E-ISSN: 1879-3312
Output data Year: 2016, Volume: 175, Pages: 200-205 Pages count : 6 DOI: 10.1016/j.matchemphys.2016.03.019
Tags Defects, Electronic materials, Luminescence, Thin films
Authors Kaichev V.V. 1,2 , Smirnova T.P. 3 , Yakovkina L.V. 3 , Ivanova E.V. 4 , Zamoryanskaya M.V. 4 , Saraev A.A. 1,2 , Pustovarov V.A. 5 , Perevalov T.V. 2,6 , Gritsenko V.A. 2,6
Affiliations
1 Boreskov Institute of Catalysis, Novosibirsk, Russia
2 Novosibirsk State University, Novosibirsk, Russia
3 Nikolaev Institute of Inorganic Chemistry, Novosibirsk, Russia
4 Ioffe Physical-Technical Institute, St. Petersburg, Russia
5 Ural State Technical University, Ekaterinburg, Russia
6 Rzhanov Institute of Semiconductor Physics, Novosibirsk, Russia

Funding (1)

1 Russian Science Foundation 14-19-00192

Abstract: Dielectric films of La2O3, HfO2, and LaxHf1-xOy were synthesized by metal-organic chemical vapor deposition. Structural, chemical, and luminescence properties of the films were studied using X-ray photoelectron spectroscopy, methods of X-ray diffraction and selected area electron diffraction, high-resolution transmission electron microscopy, and a cathodoluminescence technique. It was found that doping of hafnium oxide with lanthanum leads to the formation of a continuous series of solid solutions with a cubic structure. This process is accompanied by the formation of oxygen vacancies in the HfO2 lattice. Cathodoluminescence spectra of the LaxHf1-xOy/Si films exhibited a wide band with the maximum near 2.4–2.5 eV, which corresponds to the blue emission. Quantum-chemical calculations showed that this blue band is due to oxygen vacancies in the HfO2 lattice.
Cite: Kaichev V.V. , Smirnova T.P. , Yakovkina L.V. , Ivanova E.V. , Zamoryanskaya M.V. , Saraev A.A. , Pustovarov V.A. , Perevalov T.V. , Gritsenko V.A.
Structure, Chemistry and Luminescence Properties of Dielectric LaxHf1-xOy Films
Materials Chemistry and Physics. 2016. V.175. P.200-205. DOI: 10.1016/j.matchemphys.2016.03.019 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Nov 5, 2015
Accepted: Mar 19, 2016
Published online: Mar 24, 2016
Published print: Jun 1, 2016
Identifiers:
publication_identifier.wos_identifier_type WOS:000374612000025
publication_identifier.scopus_identifier_type 2-s2.0-84962407726
publication_identifier.rinz_identifier_type 27150656
publication_identifier.accession_number_identifier_type 2016:485669
publication_identifier.chemical_accession_number_identifier_type 164:490469
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