1. Synthesis and Luminescence Properties of Tb3+-Doped Aluminum Oxynitride.
- Author
-
Akhmadullina, N. S., Ishchenko, A. V., Yagodin, V. V., Lysenkov, A. S., Sirotinkin, V. P., Kargin, Yu. F., and Shul'gin, B. V.
- Subjects
TERBIUM ,LUMINESCENCE ,ALUMINUM ,LUMINESCENCE quenching ,ATMOSPHERIC nitrogen ,CATHODOLUMINESCENCE ,PHOTOLUMINESCENCE - Abstract
We report an experimental study concerned with the synthesis and luminescence properties of Al
5 O6 N aluminum oxynitride doped with Tb3+ in the concentration range 0.025–0.5 at %. All of the samples, prepared by firing appropriate mixtures in a nitrogen atmosphere at 1600°C, consisted predominantly of phase-pure γ-ALON (Al5 O6 N), with small amounts of impurity phases: Al7 O3 N5 aluminum oxynitride and Tb3 Al5 O12 terbium aluminate. Their pulsed cathodoluminescence and photoluminescence spectra contain emission bands typical of Tb3+ ions. The concentration threshold for luminescence quenching corresponds to a Tb3+ concentration at a level of 0.4 at %. A Tb3+ cross relaxation effect found in Al5 O6 N:Tb3+ is discussed and photoluminescence spectra are shown to be inhomogeneous at low Tb3+ concentrations in Al5 O6 N. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF