Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1497514 | Optical Materials | 2006 | 6 Pages |
Abstract
Ce3+ and/or Tb3+-doped (La, Gd)MgB5O10 nanocrystalline thin films were deposited on silica glass substrates by a sol-gel dip-coating process using triethyl borate B(OC2H5)3 as the boron source. The results of XRD indicated that the films have fully crystallized after annealing at 800 °C. The films are transparent, uniform and crack free with a thickness of about 300 nm, consisting of particles with an average grain size of 50 nm. The luminescence and energy transfer properties of Ce3+ and Tb3+ have been studied in the films. It is confirmed that the excitation energy of Ce3+ transfers to the Gd3+, migrates over the Gd3+ sublattices, trapped by the Tb3+ and resulted in its characteristic green emission (5D4-7F5 at 543 nm) in GdMgB5O10 nanocrystalline films as in the powder phosphors.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
C.K. Lin, M. Yu, M.L. Pang, J. Lin,