Yogesh Kumar Sharma
Govt. Post Graduate College Haldwani (Nainital) Uttarakhand, India
Title: Spectral analysis of ZnO Nanomaterials with Neodymium ions
Biography
Biography: Yogesh Kumar Sharma
Abstract
Nanoparticles with rare earth ions have many fascinating properties, giving it the potential to be used for advanced optoelectronic and spintronic applications. Neodymium is one of the most widely used elements for high power laser applications and recently these lasers have shown their usefulness in inertia confined fusion experiments. Furthermore, Nd3+ doping reduces the band gap energy and enhances the possibility of the photodegradation of dyes under visible light.
In the present paper, ZnO Nanomaterial with different concentration of Nd3+ ions have been prepared by chemical synthesis method and characterized by XRD, SEM, TEM, FTIR, absorption and fluorescence spectra. The SEM image shows approximate Hexagonal shape to ZnO nanoparticles and the size of the particles around 200-20nm. When the concentration of Nd3+ is increased the particle size decreases. Nine absorption bands have been observed in the ZnO nanomaterial with neodymium ions. The assignment of these bands from ground state 4I9/2 to the excited states 4F5/2, 4F7/2, 4F9/2, 2H11/2, 4G5/2, 2K13/2, 4G9/2, 2K15/2 and 4D3/2 energy levels are observed in ZnO nanomaterial. The values of Slater – Condon (Fk ), Racah (Ek ) and Lande¢( z4f ) and Judd-Ofelt parameters are computed for each nanomaterial specimen by using partial regression method taking into consideration all the absorption peaks observed. The laser parameters have also been computed with help of fluorescence data.