NSTI Nanotech 2009

Structural and Optical Properties of Zinc Oxide Nanoparticles Synthesized using Continuous Spray Pyrolysis Reactor

V. Dutta, V. Phanikaran B., C. Dwivedi
Indian Institute of Technology Delhi, IN

Keywords: ZIncOxide nanoparticles, spray pyrolysis

Abstract:

ZnO nanoparticles were prepared by injecting atomized droplets of spray solution containing zinc precursor into a heated reactor. Structural and optical properties of ZnO nanoparticles thus created were investigated using X-ray diffraction (XRD), electron microscopy ( TEM and SEM) and optical absorption spectra.The TEM picture showed nearly monodispersed ZnO nanoparticles having average particle size ~18 nm. HRTEM pictures showed the d-spacings ~ 0.26 nm corresponding to the (002) lattice planes. The energy dispersive X-ray analysis (EDX) confirmed the stoichiometric composition with no presence of other impurities. The X-ray diffraction (XRD) indicated pure ZnO peaks and the optical measurements showed a direct band gap. ZnO nanoparticles can thus be prepared on a continuous basis and used for making large area devices like Dye Sensitized Solar Cells (DSSC) and hybrid organic solar cells.
 
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