Energy transfer phenomena in lanthanide metaborates (LnB3O6)

Abstract

It is shown that GdB3O6 is an excellent host lattice to obtain efficient photoluminescent materials. For this purpose we need a sensitizer (S) of the Gd3+ sublattice and an activator (A). Energy transport from S to A occurs via the Gd3+ sublattice. We studied S = Sb3+, Bi3+, Ce3+ and A = Eu3+, Tb3+. Results confirm the transport process S → Gd(→ Gd)n → A.