Abstract

An eco friendly and facile green combustion method is employed to synthesize CeO2-ZnO-In2O3 nanocomposite using Aloevera gel extract as a reducing agent followed by calcination to increase the emission properties in the blue region. The Bragg reflections of CeO2, ZnO and In2O3 confirms the formation of the NCs. However, the reflections corresponding to ZnO was found to be dominant. The crystallite size and other structural parameters such as strain, crystallinity, dislocation density and structural factor were determined. The surface morphology consists of highly agglomerated nanoparticles due to decrease in surface energy and adherence of particles with weak force. The direct energy band gap was found to be 3.06 eV. Further, the photoluminescence emission spectra, CIE and CCT coordinates clearly confirms the high intense emission in the blue region. The technique of powder dusting is used to visualize the latent finger prints. With a clear resolution, a well resolved ridge patterns for the identification of distinct latent finger prints are observed in the synthesized CeO2-ZnO-In2O3 nanocomposite. Thus, the present synthesized nanocomposite might be potential in blue light emission, fluorescence labelling and forensic applications.

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