Manganese-doped zinc orthosilicate (ZnSiO4:Mn) is employed in a wide range of applications, including use as a phosphor host, and in ceramics, electrical insulators, glazes, and pigments.1 Zn2SiO4:Mn is known as a green-emitting phosphor for use in displays, cathode ray tubes, lamps, electroluminescent and optoelectronic devices, medical imaging technology, and plasma display panels.2,3 In recent decades, several methods have been used for the synthesis of this compound, such as sol-gel, solid-state reactions, spray pyrolysis, fume pyrolysis, and hydrothermal methods.4,5 The present work describes the synthesis of submicron and nanoparticles of Zn2SiO4:Mn using combined sol-gel, microwave, and sonication techniques.