Effect of point defects on luminescence characteristics of ZnO ceramics
- Авторлар: Rodnyi P.A.1, Chernenko K.A.1, Zolotarjovs A.2, Grigorjeva L.2, Gorokhova E.I.3, Venevtsev I.D.1
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Мекемелер:
- Peter the Great Saint-Petersburg Polytechnic University
- Institute of Solid State Physics
- Research and Technological Institute of Optical Materials Studies
- Шығарылым: Том 58, № 10 (2016)
- Беттер: 2055-2061
- Бөлім: Impurity Centers
- URL: https://journals.rcsi.science/1063-7834/article/view/198869
- DOI: https://doi.org/10.1134/S1063783416100309
- ID: 198869
Дәйексөз келтіру
Аннотация
Photo- and thermally stimulated luminescence of ZnO ceramics are produced by uniaxial hot pressing. The luminescence spectra of ceramics contain a wide band with a maximum at 500 nm, for which oxygen vacancies VO are responsible, and a narrow band with a maximum at 385 nm, which is of exciton nature. It follows from luminescence excitation spectra that the exciton energy is transferred to luminescence centers in ZnO. An analysis of the thermally stimulated luminescence curves allowed detection of a set of discrete levels of point defects with activation energies of 25, 45, 510, 590 meV, and defects with continuous energy distributions in the range of 50–100 meV. The parameters of some of the detected defects are characteristic of a lithium impurity and hydrogen centers. The photoluminescence kinetics are studied in a wide temperature range.
Авторлар туралы
P. Rodnyi
Peter the Great Saint-Petersburg Polytechnic University
Email: nuclearphys@yandex.ru
Ресей, ul. Polytekhnicheskaya 29, St. Petersburg, 195251
K. Chernenko
Peter the Great Saint-Petersburg Polytechnic University
Хат алмасуға жауапты Автор.
Email: nuclearphys@yandex.ru
Ресей, ul. Polytekhnicheskaya 29, St. Petersburg, 195251
A. Zolotarjovs
Institute of Solid State Physics
Email: nuclearphys@yandex.ru
Латвия, 8 Kengarga st., Riga, LV-1063
L. Grigorjeva
Institute of Solid State Physics
Email: nuclearphys@yandex.ru
Латвия, 8 Kengarga st., Riga, LV-1063
E. Gorokhova
Research and Technological Institute of Optical Materials Studies
Email: nuclearphys@yandex.ru
Ресей, St. Petersburg, 193171
I. Venevtsev
Peter the Great Saint-Petersburg Polytechnic University
Email: nuclearphys@yandex.ru
Ресей, ul. Polytekhnicheskaya 29, St. Petersburg, 195251
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