Phase-sensitive radioluminescence and photoluminescence features in Tm³⁺-doped yttrium tantalates for cyan and white light generation

Abstract

Radioluminescence and visible photoluminescent tunability features from a single Tm3+-doped yttrium tantalate phosphor prepared by a soft sol–gel method designed to afford cubic Y3TaO7 and monoclinic M’-YTaO4 crystalline phases are...

Refined structural studies on the fluorite-related polymorphs of sol–gel undoped and Eu3+-doped yttrium tantalates

“…8,9,36,39,40 In previous works, we have shown that lanthanide ions are highly soluble within the Y 3 TaO 7 structure and homogeneously distributed in the lattice, and that doping with RE 3+ affects Y 3 TaO 7 crystallization and phase stabilization. 8,9,36,[39][40][41] Indeed, Eu 3+ present in this host affects Y 3 TaO 7 phase decomposition and delays M′-YTaO 4 formation. 8 The Eu 3+ -doped yttrium tantalates afforded a high concentration luminescence quenching (∼30 mol% Eu 3+ ) and an absolute quantum yield value up to 30%.…”