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Radiative and Radiationless Transitions in Rare Earth Chelates

  • V. V. Kuznetsova
  • R. A. Puko
  • V. S. Khomenko
  • T. I. Razvina
Conference paper

Abstract

The luminescence kinetics and relative yields of crystalline tetrakis-ligand isomers of rare earth β-diketonates were measured in the temperature range from 77 K to 293 K. The isomers differ In their luminescence spectra, yields and lifetimes. It is found that the Eu3+ 5D1 luminescence level is excited by means of the triplet state of the ligand. The 5D0 level is populated as a result of the radiationless 5D1-5D0 transition and the probability of this process increases with temperature.

Keywords

Excitation Energy Transfer Triplet Level Radiationless Transition Luminescence Kinetic Luminescence Yield 
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Copyright information

© Plenum Press, New York 1973

Authors and Affiliations

  • V. V. Kuznetsova
    • 1
  • R. A. Puko
    • 1
  • V. S. Khomenko
    • 1
  • T. I. Razvina
    • 1
  1. 1.Institute of PhysicsMinskUSSR

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