Structure, Chemistry and Luminescence Properties of Dielectric LaxHf1-xOy Films Full article
Journal |
Materials Chemistry and Physics
ISSN: 0254-0584 , E-ISSN: 1879-3312 |
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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 |
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Affiliations |
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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 WOS Scopus РИНЦ
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 WOS Scopus РИНЦ
Dates:
Submitted: | Nov 5, 2015 |
Accepted: | Mar 19, 2016 |
Published online: | Mar 24, 2016 |
Published print: | Jun 1, 2016 |
Identifiers:
Web of science | WOS:000374612000025 |
Scopus | 2-s2.0-84962407726 |
Elibrary | 27150656 |
Chemical Abstracts | 2016:485669 |
Chemical Abstracts (print) | 164:490469 |
OpenAlex | W2311676364 |