| Abstract Scope |
Gallium oxide (Ga2O3) has attracted much attention due to its promising applications in optical and electronic devices. Over the past years, the optical properties of rare earth doped Ga2O3 powders, films, single crystals have been widely explored for phosphors, deep-UV optoelectronics and scintillator applications, which makes it even more attractive to fabricate Ga2O3 transparent ceramics. However, there are few studies about Ga2O3 ceramics and even less on transparent ceramics due to the serious reduction reaction and monoclinic structure of Ga2O3. In this report, we synthesized different rare earth (RE) elements (Er-, Dy-, Tb-) doped Ga2O3 powders via co-precipitation method and prepared RE-doped Ga2O3 transparent ceramics by spark plasma sintering. The phase structures and microstructures of RE-doped Ga2O3 powders and ceramics were characterized by XRD and SEM, respectively. Additionally, the density, transmittance and luminescence performance of the sintered ceramics were studied in details. |