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Journal of Materials Science

, Volume 42, Issue 16, pp 6755–6761 | Cite as

Absorption and emission spectral analysis of Pr3+: tellurite glasses

  • K. AnnapurnaEmail author
  • Ritwika Chakrabarti
  • S. Buddhudu
Article

Abstract

This paper reports on the results concerning optical absorption and fluorescence properties of 60TeO2–25ZnO–10BaO–4.5La2O3–0.5Pr2O3 (Pr3+: TZBL) glass. Both electronic (αe) and vibrational (αv) band edge cut-off wavelengths of the host glass (TZBL) have been evaluated from the measurement of its UV–Vis and IR transmission spectra. The glass studied has shown 80% transmittance throughout its optical window from 0.366 μm (αe = 3.39 eV) to 6.30 μm (αv = 0.197 eV). The FT-IR transmission spectra of Pr3+ doped and also reference tellurite glasses have demonstrated the presence of TeO4 and TeO3+1 or TeO3 structural units. The thermal properties of this glass have been investigated from the study of DTA profile. The recorded optical absorption spectra of Pr3+: TZBL glass have shown eight absorption bands from 300 nm to 2,500 nm. The fluorescence emission has been observed mainly from 3P1, 3P0 and 1D2 states to the lower lying states and which are assigned to the transitions of 3P03H4,5,6; 3P03F2,3,4; 3P13H5 & 1D23H4,5 upon excitations at three excitation states of 3P0,1,2. From the time resolved spectra, it is found that 3P0 level decays faster than 1D2 level. The fluorescence decay kinetics of 3P0 and 1D2 levels have been measured and the lifetimes are found to be 21 and 39 μs, respectively.

Keywords

La2O3 TeO2 Pr2O3 Tellurite Glass Reference Glass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Authors would like to thank Dr. H.S. Maiti, Director, CGCRI, Kolkata and Dr. K. Phani, Head, Glass Division, for their kind co-operation and continued support in the present work. One of the authors (RC) expresses her gratefulness to the CGCRI, CSIR for awarding her with a research internship.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • K. Annapurna
    • 1
    Email author
  • Ritwika Chakrabarti
    • 1
  • S. Buddhudu
    • 2
  1. 1.Glass Technology LaboratoryCentral Glass & Ceramic Research InstituteKolkataIndia
  2. 2.Department of PhysicsSri Venkateswara UniversityTirupatiIndia

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