The contribution of Eu3+ doping concentration on the modulation of morphology and luminescence properties of InVO4:Eu3+

Abstract

Nanostructures of InVO₄ and InVO₄:Eu³⁺ were synthesized through a hydrothermal method with a post annealing process. The morphology and luminescence properties of InVO₄:xEu³⁺ can be modulated by Eu³⁺ ion doping concentration. SEM and (HR)TEM studies indicated that different sizes of nanoparticles were obtained when the Eu³⁺ ion concentration ranged from 2 mol% to 30 mol%, and middle-concave nanodisks or nanoparticles with different sizes were obtained with the Eu³⁺ ion concentration ranging from 35 mol% to 45 mol%. Luminescence property studies indicated that the photoluminescence emission originated both from VO₄³⁻ and Eu³⁺, and the emission of VO₄³⁻ was blue shifted, affected by the doped Eu³⁺ ions. The CIE chromaticity diagram of Eu³⁺-doped indium vanadate exhibited green, blue-green, red, giving especially white light emission.