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    Radiation Effects in Materials. Chapter 11: Ion-Irradiation-Induced Carbon Nanostructures in Optoelectronic Polymer Materials

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    Date
    2016
    Author
    Kavetskyy, Taras S.
    Stepanov, Andrey L.
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    Abstract
    The recent results obtained on the ion-irradiation-induced carbon nanostructures in optoelectronic polymer materials exemplified by boron-ion-implanted polymethylmethacrylate (B:PMMA) with an energy of 40 keV, ion doses from 6.25 × 1014 to 5.0 × 1016 ions/cm2, and current density <2 μA/cm2 are reviewed. The positron annihilation spectroscopy (slow positron beam spectroscopy based on Doppler broadening of positron annihilation gamma rays as a function of incident positron energy and positron annihilation lifetime at a positron energy of 2.15 keV, and temperature-dependent positron annihilation lifetime spectroscopy), optical UV-visible spectroscopy, Raman spectroscopy, electrical (current–voltage) measurements, and nanoindentation test are chosen as the main experimental tools for the investigation of low-energy ion-induced processes in B:PMMA. The formation of carbon nanostructures is confirmed for the samples irradiated with higher ion fluences (>1016ions/cm2) and the experimental results of the comprehensive study are found to be in a good agreement with SRIM (stopping and range of ions in matter) simulation results.The recent results obtained on the ion-irradiation-induced carbon nanostructures in optoelectronic polymer materials exemplified by boron-ion-implanted polymethylmethacrylate (B:PMMA) with an energy of 40 keV, ion doses from 6.25 × 1014 to 5.0 × 1016 ions/cm2, and current density <2 μA/cm2 are reviewed. The positron annihilation spectroscopy (slow positron beam spectroscopy based on Doppler broadening of positron annihilation gamma rays as a function of incident positron energy and positron annihilation lifetime at a positron energy of 2.15 keV, and temperature-dependent positron annihilation lifetime spectroscopy), optical UV-visible spectroscopy, Raman spectroscopy, electrical (current–voltage) measurements, and nanoindentation test are chosen as the main experimental tools for the investigation of low-energy ion-induced processes in B:PMMA. The formation of carbon nanostructures is confirmed for the samples irradiated with higher ion fluences (>1016ions/cm2) and the experimental results of the comprehensive study are found to be in a good agreement with SRIM (stopping and range of ions in matter) simulation results.
    URI
    https://lib.hpu.edu.vn/handle/123456789/22754
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