Promising PVA/TiO2, CuO filled nanocomposites for electrical and third order nonlinear optical applications
| Autor: | Gananatha Shetty B, Parutagouda Shankaragouda Patil, Rithin Kumar N B, Raghavendra Bairy, Vincent Crasta, K. Rajesh |
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| Rok vydání: | 2019 |
| Předmět: |
Copper oxide
Photoluminescence Nanocomposite Materials science Organic Chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polyvinyl alcohol Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Inorganic Chemistry chemistry.chemical_compound chemistry Electrical resistivity and conductivity Ultimate tensile strength Titanium dioxide Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material 0210 nano-technology Spectroscopy |
| Zdroj: | Optical Materials. 95:109218 |
| ISSN: | 0925-3467 |
| Popis: | In this paper, we report enhancing the structural, morphological, mechanical, linear and nonlinear optical properties of polyvinyl alcohol (PVA) encapsulated with titanium dioxide (TiO 2 ) and copper oxide (CuO) nanoparticles. PVA/(x)TiO 2 (15-x)CuO nanocomposites for x = 0 wt%, 1 wt%, 5 wt%, 7.5 wt%, 10 wt%, 14 wt% and 15 wt% filling concentration are prepared using ex-situ and solvent casting technique. The XRD spectra of the prepared nanocomposites endorse the semi-crystalline nature of PVA nanocomposites. The atomic force microscope (AFM) image displayed the uniform grain structure for pure PVA and change in surface morphology for prepared nanocomposites. Universal testing machine (UTM) explored high tensile strength and Young's modulus of 1685.70 MPa for x = 10 wt% filling concentration. PVA/(x)TiO 2 (15-x)CuO nanocomposites shows an enhanced electrical conductivity of 3.21 × 10 −8 Scm −1 for x = 10 wt% filling concentration. UV–Vis spectroscopy exposed the reduction in optical energy gap with the increase in filling concentration. Photoluminescence (PL) studies spectacles maximum enhancement in PL intensity for x = 10 wt% filling concentration. The Z-scan technique shows third order nonlinear absorption coefficient of 8.17 × 10 −4 cm/W, the nonlinear refractive index of 2.56 × 10 −8 cm 2 /W and nonlinear optical susceptibility of 1.48 × 10 −6 esu for optimum nanocomposites. |
| Databáze: | OpenAIRE |
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