The Origin of 2.7 eV Luminescence and 5.2 eV Excitation Band in Hafnium Ooxide | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Origin of 2.7 eV Luminescence and 5.2 eV Excitation Band in Hafnium Ooxide Full article

Journal

Applied Physics Letters
ISSN: 0003-6951 , E-ISSN: 1077-3118

Output data

Year: 2014, Volume: 104, Number: 7, Pages: 071904-1-071904-5 Pages count : 5 DOI: 10.1063/1.4865259

Tags

Absorption spectroscopy; Energy gap; Hafnium oxides; Light absorption; Luminescence; Oxide films; Oxides

Authors

Perevalov T.V. ^1,2 , Aliev V.Sh. ¹ , Gritsenko V.A. ¹ , Saraev A.A. ³ , Kaichev V.V. ^2,3 , Ivanova E.V. ⁴ , Zamoryanskaya M.V. ⁴

Affiliations

1	A. V. Rzhanov Institute of Semiconductor Physics of SB RAS, 13 Lavrentieva Ave, 630090 Novosibirsk, Russia
2	Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk, Russia
3	Boreskov Institute of Catalysis of SB RAS, 5 Lavrentieva Ave, 630090 Novosibirsk, Russia
4	Ioffe Physicotechnical Institute of RAS, 26 Politechnicheskaya St., 194021 St. Petersburg, Russia

Funding (3)

1	Russian Foundation for Basic Research	14-02-31631
2	Президиум РАН	24.18
3	The Ministry of Education and Science of the Russian Federation

The origin of a blue luminescence band at 2.7 eV and a luminescence excitation band at 5.2 eV of hafnia has been studied in stoichiometric and non-stoichiometric hafnium oxide films. Experimental and calculated results from the first principles valence band spectra showed that the stoichiometry violation leads to the formation of the peak density of states in the band gap caused by oxygen vacancies. Cathodoluminescence in the non-stoichiometric film exhibits a band at 2.65 eV that is excited at the energy of 5.2 eV. The optical absorption spectrum calculated for the cubic phase of HfO2 with oxygen vacancies shows a peak at 5.3 eV. Thus, it could be concluded that the blue luminescence band at 2.7 eV and HfOx excitation peak at 5.2 eV are due to oxygen vacancies. The thermal trap energy in hafnia was estimated.

Perevalov T.V. , Aliev V.S. , Gritsenko V.A. , Saraev A.A. , Kaichev V.V. , Ivanova E.V. , Zamoryanskaya M.V.
The Origin of 2.7 eV Luminescence and 5.2 eV Excitation Band in Hafnium Ooxide
Applied Physics Letters. 2014. V.104. N7. P.071904-1-071904-5. DOI: 10.1063/1.4865259 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Dec 19, 2013
Accepted:	Jan 29, 2014
Published print:	Feb 17, 2014
Published online:	Feb 18, 2014

Web of science:	WOS:000332038500014
Scopus:	2-s2.0-84897412226
Elibrary:	21869991
Chemical Abstracts:	2014:338722
Chemical Abstracts (print):	160:436155
OpenAlex:	W2066057514

DB	Citing
Web of science	46
Scopus	48
Elibrary	50
OpenAlex	47