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Effect of nano-carbon dispersions on signal in silicon-based sensor structure with photoelectrical transducer principle

  • Anton I. Manilov*
  • , Aleksey V. Kozinetz
  • , Sergiy V. Litvinenko
  • , Valeriy A. Skryshevsky
  • , Mohammed Al Araimi
  • , Alex Rozhin
  • *Corresponding author for this work
  • Taras Shevchenko National University of Kyiv

Research output: Contribution to journalArticlepeer-review

Abstract

We identified different nano-carbon species such as graphene nanoplatelets, graphite flakes and carbon nanotubes dispersed in N-methyl-2-pyrrolidone using a novel sensor structure based on a “deep” silicon barrier working as a photoelectrical transducer. Each nano-carbon particle has specific signature in both 2D photocurrent distribution and photocurrent dependencies on bias changing surface band-bending. Additionally, all nano-carbon particles have characteristic features in the time-dependent evolution of photocurrent. The obtained results can be explained by the influence of nano-carbon molecules’ local electric field on the recombination parameters of defect centers on the silicon surface.

Original languageEnglish
Pages (from-to)308-313
Number of pages6
JournalCurrent Applied Physics
Volume19
Issue number3
Early online date17 Dec 2018
DOIs
Publication statusPublished - 1 Mar 2019

Funding

This work was supported by EU Horizon 2020 Research and Innovation Staff Exchange Programme (RISE) under Marie Sklodowska-Curie Action (project 690945 “Carther”). M.A. acknowledges the support from the Ministry of Higher Education, Sultanate of Oman .

Keywords

  • Carbon nanotubes
  • Graphene
  • Photoelectrical sensor
  • Silicon

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