title: Luminescence studies on low temperature synthesized ZnGa2O4:Ln3+ (Ln = Tb and Eu) nanoparticles.
abstract: ZnGa2O4 nanoparticles doped with lanthanide ions (Tb3+ and Eu3+) were prepared at a low temperature of 120 degrees C based on urea hydrolysis in ethylene glycol medium. X-ray diffraction studies have confirmed that strain associated with nanoparticles changes as Tb3+ gets incorporated in the ZnGa2O4 lattice. Based on steady state emission and excitation studies of ZnGa2O4:Tb nanoparticles, it has been inferred that ZnGa2O4 host is characterized by a broad emission around 427 nm and there exists energy transfer between the host and Tb3+ ions. Unlike this, for ZnGa2O4:Eu nanoparticles, very poor energy transfer between the host and Eu3+ ions is observed. These nanoparticles when coated with ligands like oleic acid results in their improved dispersion in organic solvents like chloroform and dichloromethane.
authors.affiliation: School of Chemistry, Andhra University, Visakhapatnam 530003, India.
authors.forename: C Manikyala
authors.initials: CM
authors.lastname: Rao
authors.forename: V
authors.initials: V
authors.lastname: Sudarsan
authors.forename: R S
authors.initials: RS
authors.lastname: Ningthoujam
authors.forename: U K
authors.initials: UK
authors.lastname: Gautam
authors.forename: R K
authors.initials: RK
authors.lastname: Vatsa
authors.forename: A
authors.initials: A
authors.lastname: Vinu
authors.forename: A K
authors.initials: AK
authors.lastname: Tyagi
mesh_terms: D003460:Crystallization / Q000379:methods*; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008163:Luminescent Measurements / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D013499:Surface Properties; D013696:Temperature; D017967:Zinc Compounds / Q000737:chemistry*
chemical_list: D028581:Lanthanoid Series Elements; D046911:Macromolecular Substances; D017967:Zinc Compounds