Synthesis and Characterization of Lanthanide Doped Nanomaterials

by Mr. Sanyasinaidu Boddu (Bhabha Atomic Research Centre, Trombay, Mumbai)

Monday, September 5, 2011 from 16:00 to 17:00 (Asia/Kolkata)
at Colaba Campus ( AG-69 )

Description

Lanthanide based luminescent materials are of significant current interest due to their potential applications in display devices, optical communication, bio-imaging, solar cells, lasers, etc. These materials, in general, are prepared either by complexing a lanthanide ion with suitable organic ligand or by doping the lanthanides in an appropriate inorganic lattice. The latter strategy will be discussed in this presentation. Synthesis of a variety of lanthanide ion doped inorganic nanomaterials by co-precipitation method in organic/aqueous medium has been carried out and their structural, morphological and photoluminescence properties have been investigated in detail. Typical systems investigated are the lanthanide doped SbPO₄, BiPO₄, Ga₂O₃, Sb₂O₃, ZnGa₂O₄ and CaWO₄ nanomaterials in variety of sizes and shapes. Emphasis will be given on the effect of experimental conditions such as precursor concentration, viscosity of solvent and reaction temperature on size and shape of the above mentioned nanomaterials. Photoluminescent properties of lanthanide ions in such materials will also be discussed in detail in this presentation.