Volume 7, Issue 2 (9-2018)                   2018, 7(2): 65-75 | Back to browse issues page

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Increased two-photon reverse saturable absorption in ZnO/TiO2 core/shell nanocomposites. Iranian Journal of Ceramic Science & Engineering 2018; 7 (2) :65-75
URL: http://ijcse.ir/article-1-613-en.html
Increased two-photon reverse saturable absorption in ZnO/TiO2 core/shell nanocomposites
Abstract:   (3974 Views)
In this study, ZnO cores were first synthesized by using procedures zinc acetate dehydrate and sodium hydroxide via a co-precipitation method. Then, TiO2 shells were coated on the ZnO nanoparticles by using TTIP through co-precipitation approach to form ZnO/TiO2 core/shell nanocomposites. Structural and elemental studies were performed by X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX). Nanostructure morphologies were analyzed by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The optical absorption edges and band-gap energies were calculated using UV-vis spectra. Open-aperture z-scan technique was finally used to survey two-photon absorption phenomenon. Obtained results showed an increase in two-photon reverse saturable absorption for the ZnO/TiO2 core/shell nanocomposites compared to pristine ZnO nanoparticles.  
Keywords: Core/shell nanostructures, Nonlinear optical properties, Two-photon absorption
Full-Text [PDF 1238 kb]   (914 Downloads)    
Type of Study: Research | Subject: Bioceramics
Received: 2018/12/31 | Accepted: 2018/12/31
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