Optical study of GeO2-PbO-PbF2 oxyfluoride glass singly doped with Pr3+, Nd3+, Sm3+ and Eu3

Glasses with composition 50GeO2-(50-x)PbO-5PbF2-xLnF3 (Ln = Pr3+, Nd3+, Sm3+, Eu3+) were synthesised in the bulk form. The content of PbF2 was constant and amounted to 5 mol% whereas, the concentration of luminescent ions was 0.2 and 2 mol%. Spectroscopic properties (absorption, emission) of optical...

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Bibliographic Details
Published in:Journal of alloys and compounds 2005-11, Vol.403 (1-2), p.76-85
Main Authors: KLIMESZ, B, DOMINIAK-DZIK, G, SOLARZ, P, ZELECHOWER, M, RYBA-ROMANOWSKI, W
Format: Article
Language:English
Subjects:
Amorphous materials, glasses and other disordered solids
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
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Summary:Glasses with composition 50GeO2-(50-x)PbO-5PbF2-xLnF3 (Ln = Pr3+, Nd3+, Sm3+, Eu3+) were synthesised in the bulk form. The content of PbF2 was constant and amounted to 5 mol% whereas, the concentration of luminescent ions was 0.2 and 2 mol%. Spectroscopic properties (absorption, emission) of optically active ions were studied at room temperature. Oscillator strengths have been used to calculate phenomenological intensity parameters Omega2,4,6. Radiative transition probabilities as well as branching ratios and radiative lifetimes of luminescent levels were estimated. Lifetimes and the fluorescence dynamics were studied as a function of concentration. The Judd-Ofelt analysis and the Inokuti-Hirayama model for energy transfer between activator ions provided information on radiative processes and non-radiative relaxation of excited states.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2005.05.033