Hall-Effect Study of Disordered Regions in Proton-Irradiated n-Si Crystals

  • T. A. Pagava Georgian Technical University
  • M. G. Beridze Georgian Technical University
  • N. I. Maisuradze Georgian Technical University
  • L. S. Chkhartishvili Georgian Technical University
  • I. G. Kalandadze Georgian Technical University
Keywords: disordered regions, proton irradiation, effective Hall mobility, silicon


The nature and dimensions of disordered regions emerged in n-Si single crystals irradiated with high-energy (25 MeV) protons have been studied by carrying out Hall measurements of their electrophysical parameters. Specimens fabricated with the use of the zone-melting technique and doped with phosphorus to a concentration of 6x10^13 cm^-3 are investigated. Irradiation was carried out at room temperature to exposure doses of (1.8–8.1)x10^12 cm^-2. Depending on the irradiation dose and the temperature of isochronous annealing, some specimens irradiated with high-energy protons revealed a drastic increase of the effective Hall mobility мeff, which is explained by the emergence of “metallic” inclusions in them, i.e. regions with the conductivity considerably higher in comparison with that of the semiconductor matrix. The radius of those regions was estimated to be Rm < 80 nm. An assumption was made that the “metallic” inclusions are nano-sized atomic clusters.


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How to Cite
Pagava, T., Beridze, M., Maisuradze, N., Chkhartishvili, L., & Kalandadze, I. (2018). Hall-Effect Study of Disordered Regions in Proton-Irradiated n-Si Crystals. Ukrainian Journal of Physics, 58(8), 773. https://doi.org/10.15407/ujpe58.08.0773
Solid matter