Variation in Structural and Optical Properties of Al Doped ZnO Nanoparticles Synthesized by Sol-gel Process

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Vanaja Aravapalli, Seshu Kalakatla, G. K. S. Prakash Raaju, Srinivasa Karumuri (2017). Variation in Structural and Optical Properties of Al Doped ZnO Nanoparticles Synthesized by Sol-gel ProcessMechanics, Materials Science & Engineering, Vol 10. doi:10.2412/mmse.23.89.710

Authors: G.K.S. Prakash Raju, P. Ashok Kumar, Vanaja Aravapalli, K. Srinivasa Rao

ABSTRACT. This article focuses on analyzing structural and optical properties of Al doped ZnO (AZO) synthesized with two different precursors aluminum chloride and aluminum nitrate. The nanoparticles were successfully fabricated and characterized at room temperature by sol-gel process. The objective of improving properties of ZnO nanoparticles by introducing dopants was successful with formation of nanoparticles having different crystalline sizes, optical absorption and luminescence properties. The two different sources influenced properties of ZnO. The particles with less crystalline size obtained from aluminum nitrate. Change in morphology from spherical to bar like morphology proved from SEM spectra. Presence of functional groups predicted from FTIR spectra. PL spectra proved UV emission and visible emission for AZO nanoparticles synthesized using dopant sources aluminum chloride and aluminum nitrate respectively. The obtained properties prove successful utilization of AZO nanoparticles as building materials in fabrication of optoelectronic devices.

Keywords: aluminum nanoparticles, ZnO, XRD, SEM, UV-Vis, PL

DOI 10.2412/mmse.23.89.710

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