Local carrier distribution imaging on few-layer MoS2 exfoliated on SiO2 by scanning nonlinear dielectric microscopy

Kohei Yamasue, Yasuo Cho

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We demonstrate that scanning nonlinear dielectric microscopy (SNDM) can be used for the nanoscale characterization of dominant carrier distribution on atomically thin MoS2 mechanically exfoliated on SiO2. For stable imaging without damaging microscopy tips and samples, SNDM was combined with peak-force tapping mode atomic force microscopy. The identification of dominant carriers and their spatial distribution becomes possible even for single and few-layer MoS2 on SiO2 using the proposed method allowing differential capacitance (dC/dV) imaging. We can expect that SNDM can also be applied to the evaluation of other two-dimensional semiconductors and devices.

Original languageEnglish
Article number243102
JournalApplied Physics Letters
Volume112
Issue number24
DOIs
Publication statusPublished - 2018 Jun 11

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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