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 |
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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 |
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Организации |
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Информация о финансировании (3)
1 | Президиум РАН | 24.18 |
2 | Российский фонд фундаментальных исследований | 14-02-31631 |
3 | Министерство образования и науки Российской Федерации |
Реферат:
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.
Библиографическая ссылка:
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
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
Даты:
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. |
Идентификаторы БД:
Web of science | WOS:000332038500014 |
Scopus | 2-s2.0-84897412226 |
РИНЦ | 21869991 |
Chemical Abstracts | 2014:338722 |
Chemical Abstracts (print) | 160:436155 |
OpenAlex | W2066057514 |