Fluctuation-Enhanced Sensing of Organic Vapors by Ink-Printed MoS2 Devices under UV Irradiation - Publication - Bridge of Knowledge

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Fluctuation-Enhanced Sensing of Organic Vapors by Ink-Printed MoS2 Devices under UV Irradiation

Abstract

This work presents the results of fluctuationenhanced sensing (FES) of selected organic gases by MoS2 sensor fabricated via a simple ink printing method. We demonstrate that low-frequency noise measured under UV irradiation (275 nm) is more sensitive to different gases than measured in the dark. The noise at 1 Hz under UV light increased 3.3, 3.5, 1.6, and 2.9 times for chloroform, tetrahydrofuran, acetonitrile, and acetone ambiances, respectively. By comparing the noise spectra collected in the dark and under UV light, we report that irradiation has a visible effect on the noise in the lowest frequency range (0.125–10 Hz), changing mainly the slope of the spectra. Thus, each organic gas produces a distinct signature by affecting the noise amplitude and the shape of the spectrum. The differences in the characteristic noise features among organic vapors are ascribed to differences in their molecular configuration and polar properties.

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Details

Category:
Conference activity
Type:
publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
Language:
English
Publication year:
2024
Bibliographic description:
Drozdowska K., Smulko J., Rumyantsev S., Kwiatkowski A.: Fluctuation-Enhanced Sensing of Organic Vapors by Ink-Printed MoS2 Devices under UV Irradiation// / : , 2024,
DOI:
Digital Object Identifier (open in new tab) 10.1109/i2mtc60896.2024.10561130
Sources of funding:
Verified by:
Gdańsk University of Technology

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