A spectroscopy investigation of Ce3+ and Tb3+ ions in sodium-zinc-aluminosilicate glasses is performed using the photoluminescence technique. Blue-white light, with x = 0.24 and y = 0.24 CIE chromaticity coordinates, is obtained for the Tb3+ singly-doped glass excited at 351 nm. When the sodium-zinc-aluminosilicate glass is co-doped with Ce 3+ and Tb3+ a non-radiative energy transfer from Ce 3+ to Tb3+ ions is observed upon 320 nm excitation. From an analysis of the cerium emission decay curve, the Ce3+ → Tb3+ energy transfer microscopic parameter and efficiency are obtained. Different concentrations of Ce3+ and Tb3+ ions in the glass host gives rise to blue and blue-green emissions, with different CIE coordinates. Optical waveguides were produced in the samples by Ag +-Na+ ion-exchange, and their characterization is presented.
Bibliographical noteFunding Information:
This work was supported by the CONACyT-CNR bilateral agreement under project Contract J000.385/2009. We thank Roberto Calzolai (IFAC-CNR) and Erica Viviani (Univ. Verona) for expert technical assistance. We also gratefully acknowledge the collaboration and useful comments by Maurizio Ferrari (IFN CNR, Trento), and by Christophe Kinowski and Sylvia Turrell (Phlam Lab., U. Lille 1).
- Non-radiative energy transfer
- Optical waveguides
- Zinc-sodium-aluminosilicate glasses