Non-aqueous sol–gel synthesis of hybrid rare-earth-doped γ-Ga2O3 nanoparticles with multiple organic–inorganic-ionic light-emission features

Abstract

We present a novel strategy for the synthesis of pure and Eu-doped γ-Ga₂O₃ nanoparticles with an in situ organic capping resulting from a non-aqueous solution-based benzyl alcohol synthesis route. Photoluminescence spectroscopy highlights the concomitant benzoate-related and γ-Ga₂O₃ exciton-like Eu³⁺ excitations in the UV, and a blue emission superimposed onto γ-Ga₂O₃ donor–acceptor recombination, ascribable to organic moieties different from benzoate.