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

Research output: Contribution to journalArticle

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

Keywords

  • Carbon nanotubes
  • Graphene
  • Photoelectrical sensor
  • Silicon

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