Comparative Investigation on the Emission Properties of RAl3(BO3)4 (R = Pr, Eu, Tb, Dy, Tm, Yb) Crystals with the Huntite Structure

Abstract

The luminescence properties of RAl 3 (BO 3 ) 4 (RAB, with R = Pr, Eu, Tb, Dy, Tm, Yb) huntite crystals grown from K 2 Mo 3 O 10 flux were systematically characterized in order to investigate their excitation dynamics, with particular reference to the concentration quenching that in these systems is incomplete. To this purpose, selected excitation, emission, and decay profile measurements on diluted R:YAB crystals were carried out and compared with those of the concentrated compounds. The effects of the energy transfer processes and of the lattice defects, as well as the ion-lattice interactions, have been taken into consideration in order to account for the experimental results.

Stacking Sequences of Coherent EuAl3(BO3)4 Polymorphs Define Local Eu3+ Symmetry and Control Access to Quantum Information Storage

“…Understanding this complex polymorph mixing requires spatially resolved techniques. Though several photoluminescence studies on RX 3 (BO 3 ) 4 have been conducted, ,− none has mapped behavior across a crystal to assess inhomogeneity. The effects of polymorph domains should readily be seen through changes in the 5 D 0 → 7 F 1 transition of Eu 3+ .…”

Manganese Luminescent Centers of Different Valence in Yttrium Aluminum Borate Crystals

“…The Y 3+ ions are situated between three such chains and link the chains together. YO 6 prisms are isolated from each other, having no oxygen atoms in common, which, in the case of a substitution of the Y 3+ ions by rare-earth or transition metal ions, results in low luminescence quenching [ 2 ]. This property, together with high optical nonlinearity and excellent physical characteristics and chemical stability, make YAB extremely interesting for many applications.…”

Crystal Growth of Multifunctional Borates and Related Materials

“…For example, J. Dawes and coworkers investigated liquid-phase epitaxial growth of the neodymium-doped YAl 3 (BO 3 ) 4 optical waveguides as potential active sources for planar integrated optics [16]. E. Cavalli and N. Leonyuk also analyzed the emission properties of the same orthoborate family [17]. Selected excitation, emission, and decay profile of rare earth-doped YAl 3 (BO 3 ) 4 crystals were measured and compared with those of the concentrated compounds.…”