Photoluminescent zinc oxide polymer nanocomposites fabricated using picosecond laser ablation in an organic solvent |
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| Authors: | Philipp WagenerShamsolzaman Faramarzi Andreas SchwenkeRupert Rosenfeld Stephan Barcikowski |
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| Institution: | a Laser Zentrum Hannover e.V, Department of Materials & Processes, Hollerithallee 8, 30419 Hanover, Germany
b Department of Physics, Faculty of Science, Islamic Azad University, Central Tehran Branch, Simaye Iran Str Sanat square, Tehran, Iran |
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| Abstract: | Nanocomposites made of ZnO nanoparticles dispersed in thermoplastic polyurethane were synthesized using picosecond laser ablation of zinc in a polymer-doped solution of tetrahydrofuran. The pre-added polymer stabilizes the ZnO nanoparticles in situ during laser ablation by forming a polymer shell around the nanoparticles. This close-contact polymer shell has a layer thickness up to 30 nm. Analysis of ZnO polyurethane nanocomposites using optical spectroscopy, high resolution transmission electron microscopy and X-ray diffraction revealed that oxidized and crystalline ZnO nanoparticles were produced. Those nanocomposites showed a green photoluminescence emission centred at 538 nm after excitation at 350 nm, which should be attributed to oxygen defects generated during the laser formation mechanism of the monocrystalline nanoparticles. Further, the influence of pulse energy and polymer concentration on the production rate, laser fluence and energy-specific mass productivity was investigated. |
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| Keywords: | Nanohybrids Zinc oxide nanoparticles Photoluminescence emission Polymer nanocomposite Laser fluence Production rate |
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