ACTA

Comparison of Optical Properties of Eu³⁺ Ions in the Silica Gel Glasses Obtained by Different Preparation Techniques

J. Legendziewicz^a, W. Stręk^b, J. Sokolnicki^a, B. Keller^a and M. Borzechowska^a
^aFaculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie Street, 50-383 Wrocław, Poland
^bInstitute for Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-950 Wrocław, Poland

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Silica sol-gel glasses doped with Eu³⁺ ions were obtained by different preparation techniques. The absorption, emission and excitation spectra of the obtained glasses were measured in the range of 77-300 K. The energy level diagrams of Eu³⁺ ions were derived. An intensity analysis of f-f transitions was performed. In particular, polymeric structure behaviour of europium compounds entrapped in silica gels glasses was temperature controlled during the preparation of glasses. Their optical properties were investigated.

DOI: 10.12693/APhysPolA.90.461
PACS numbers: 78.20.Wc, 78.55.Hx, 71.55.Jv