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Abstract <p>Traditionally, the calibration of the probe work function for Kelvin scanning microscopy is carried out using highly oriented pyrolytic graphite. In this paper, it is proposed to supplement it with calibration using indium- and fluorine-doped tin oxide (ITO and FTO). The study is performed using platinum- and gold-coated probes. Based on the calibration results, the positions of the Fermi levels of lead sulfide nanocrystals with ligand shells of 1,2-ethanedithiol and tetrabutylammonium iodide are determined. It is shown that the selected oxides are characterized by a stable working function, an additional calibration using these oxides helps to more reliably determine the absolute position of the probe work function, and gold probes provide a more stable result. The selected oxides can be used as an addition to the calibration using pyrolytic graphite, as well as independently.</p>

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Calibration of a Kelvin Scanning Probe Microscope and Measurement of the Fermi Levels of Lead Sulfide Nanocrystals

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • D. A. Onishchuk,
  • A. P. Litvin,
  • P. S. Parfenov

摘要

Abstract

Traditionally, the calibration of the probe work function for Kelvin scanning microscopy is carried out using highly oriented pyrolytic graphite. In this paper, it is proposed to supplement it with calibration using indium- and fluorine-doped tin oxide (ITO and FTO). The study is performed using platinum- and gold-coated probes. Based on the calibration results, the positions of the Fermi levels of lead sulfide nanocrystals with ligand shells of 1,2-ethanedithiol and tetrabutylammonium iodide are determined. It is shown that the selected oxides are characterized by a stable working function, an additional calibration using these oxides helps to more reliably determine the absolute position of the probe work function, and gold probes provide a more stable result. The selected oxides can be used as an addition to the calibration using pyrolytic graphite, as well as independently.