Interaction of Optical Vibrations with Charge Traps and the Thermoluminescence Spectra of Polymers

  • V. Sugakov Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine
  • N. Ostapenko Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • Yu. Ostapenko Institute of Physics, Nat. Acad. of Sci. of Ukraine
  • O. Kerita National Technical University of Ukraine “Kyiv Polytechnic Institute”
  • V. Strelchuk V.E. Lashkaryov Institute of Semiconductor Physics, Nat. Acad. of Sci. of Ukraine
  • O. Kolomys V.E. Lashkaryov Institute of Semiconductor Physics, Nat. Acad. of Sci. of Ukraine
  • A. Watanabe Institute of Chemical Reactions, Tohoku University
Keywords: poly(di-n-hexylsilane), traps, thermoluminescence, Raman spectra, activation energy

Abstract

The energy spectrum of hole traps is investigated in organic polymer poly(di-n-hexylsilane) by the fractional thermally stimulated luminescence (TSL) in the 5–40 K temperature range. In addition, the Raman spectrum of the polymer is studied at 300 K. For the first time, the structure on a TSL curve is observed. It is found that the obtained activation energies of traps coincide with the frequencies of Si–Si vibrations of the polymer chain active in the Raman spectra. These results have been explained within a model, by which the release of charge carriers from traps may be activated via the resonant energy transfer from Si–Si vibrations to the charge carriers. The model explains the appearance of a structure on the TSL curve.

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Published
2019-01-06
How to Cite
Sugakov, V., Ostapenko, N., Ostapenko, Y., Kerita, O., Strelchuk, V., Kolomys, O., & Watanabe, A. (2019). Interaction of Optical Vibrations with Charge Traps and the Thermoluminescence Spectra of Polymers. Ukrainian Journal of Physics, 61(6), 531. https://doi.org/10.15407/ujpe61.06.0531
Section
Solid matter