The Origin of 2.7 eV Luminescence and 5.2 eV Excitation Band in Hafnium Ooxide | Sciact - CRIS-система Института катализа

The Origin of 2.7 eV Luminescence and 5.2 eV Excitation Band in Hafnium Ooxide Научная публикация

Журнал

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

Вых. Данные

Год: 2014, Том: 104, Номер: 7, Страницы: 071904-1-071904-5 Страниц : 5 DOI: 10.1063/1.4865259

Ключевые слова

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

Авторы

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

Организации

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

Информация о финансировании (3)

1	Президиум РАН	24.18
2	Российский фонд фундаментальных исследований	14-02-31631
3	Министерство образования и науки Российской Федерации

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 CAPlusCA OpenAlex

Поступила в редакцию:	19 дек. 2013 г.
Принята к публикации:	29 янв. 2014 г.
Опубликована в печати:	17 февр. 2014 г.
Опубликована online:	18 февр. 2014 г.

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

БД	Цитирований
Web of science	46
Scopus	49
РИНЦ	50
OpenAlex	48