Optical properties of europium-activated hafnium fluoride-based glasses


Дәйексөз келтіру

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Аннотация

We have studied the optical absorption, luminescence, and electron paramagnetic resonance of EuF3- and EuF2-activated fluorohafnate glasses. The glasses prepared with EuF2 contain both di- and trivalent europium. The fraction of divalent europium clusters in the glass host decreases with decreasing EuF2 concentration. Eu2+ luminescence in the fluorohafnate glasses is quenched, which is due the overlap of Eu2+ excited state levels with the conduction band of the glass, resulting in nonradiative relaxation through Hf3+ levels in the conduction band. The Eu3+ luminescence spectra contain lines corresponding to transitions from several levels of the 5D multiplet to levels of the 7F multiplet. The relationship between transitions from different 5D levels depends on europium concentration and temperature.

Авторлар туралы

M. Brekhovskikh

Kurnakov Institute of General and Inorganic Chemistry

Хат алмасуға жауапты Автор.
Email: mbrekh@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

S. Batygov

Prokhorov General Physics Institute

Email: mbrekh@igic.ras.ru
Ресей, ul. Vavilova 38, Moscow, 119991

L. Moiseeva

Kurnakov Institute of General and Inorganic Chemistry; Prokhorov General Physics Institute

Email: mbrekh@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991; ul. Vavilova 38, Moscow, 119991

L. Demina

Kurnakov Institute of General and Inorganic Chemistry

Email: mbrekh@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

I. Zhidkova

Kurnakov Institute of General and Inorganic Chemistry

Email: mbrekh@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

S. Solodovnikov

Nesmeyanov Institute of Organoelement Compounds

Email: mbrekh@igic.ras.ru
Ресей, ul. Vavilova 28, Moscow, 119991

V. Fedorov

Kurnakov Institute of General and Inorganic Chemistry

Email: mbrekh@igic.ras.ru
Ресей, Leninskii pr. 31, Moscow, 119991

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