Title of article :
Optical MoS2 nanosheets gas sensor: experimental study
Author/Authors :
Sharif Shazileh, Mohammad Research Institute for Applied Physics & Astronomy (RIAPA) - University of Tabriz, Tabriz, Iran , Shojaei, Saeid Research Institute for Applied Physics & Astronomy (RIAPA) - University of Tabriz, Tabriz, Iran , Ahmadi, Sohrab Research Institute for Applied Physics & Astronomy (RIAPA) - University of Tabriz, Tabriz, Iran
Abstract :
We propose a full optical method for gas sensing by few-layer MoS2 nanosheets
obtained by liquid-phase epitaxy (LPE). Our samples are fully characterized by
transmission electron microscopy (TEM), photoluminescent (PL) spectroscopy, and Xray
diffraction (XRD). Further characterization and evaluation of gas sensing
application, had been done by implementing ultraviolet-visible spectroscopy (UV/Vis).
For CO2 gas which acts as a donor to our sample (based on the evaluation method that
used in this work), we calculate the response in the visible region equal to 15% while
in longer wavelengths (near-infrared) the response clearly decreased. Our experiments
show that using 2D transitional metal dichalcogenide (TMDC) materials for Gas
sensing applications may open a new horizon for using this kind of 2D material in
various types of optical sensors
Keywords :
2D materials , Gas sensors , Transitional metal , Di-chalcogenides (TMDCs)
Journal title :
Journal of Interface, Thin Film and Low Dimensional Systems
