Temperature-dependent luminescence and energy transfer in Europium and rare earth codoped nanostructured sol-gel SiO2 glasses

S. Buddhudu*, M. Morita, Hong Xi Zhang, C. H. Kam, Yee Loy Lam, Yan Zhou, Terence K S Wong, Yuen Chuen Chan, Boon Siew Ooi, Seng Lee Ng, Wenxiu Que

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Temperature- dependent luminescence spectra, lifetimes and energy transfer in Eu3+ and other rare earths (La3+, Pr3+, Nd3+, Sm3+, Gd3+, Dy3+, Er3+ & Yb3+) codoped sol-gel SiO2 glasses, were investigated in the temperature range from 10K to 300K. Due to the addition of the other rare earths as co-dopants, luminescence spectra of Eu3+ have shown significant changes not only in spectral intensities but also in emission peak features. Evaluation of the temperature- dependent energy transfer rates and lifetimes and the computation of critical energy transfer distances by employing two different energy transfer model schemes, have provided evidence for such luminescence behavior in the nanometer-size confined glass matrices.

Original languageEnglish (US)
Pages (from-to)459-465
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3896
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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