Aluminum-doped ZnO nano-laminar structures by pulsed laser ablation for gas sensing application

In this study, aluminum-doped zinc oxide (AZO) at 0.3 wt.% was synthesized by a pulsed Nd: YAG laser with a fundamental wavelength (1064 nm). The laser beam is focused on a ZnO-doped target immersed in distilled water at two pulse energies of 200 and 400 mJ. The procedure was applied in two cases: w...

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Bibliographic Details
Published in:Journal of optics (New Delhi) 2024-02, Vol.53 (1), p.544-557
Main Authors: Abbas, Zahraa Marid, Abbas, Qusay Adnan
Format: Article
Language:English
Subjects:
Aluminum
Crystallization
Distilled water
Fourier transforms
Gas sensors
Image enhancement
Infrared spectroscopy
Laser ablation
Laser beams
Lasers
Magnetic fields
Metal oxides
Nanoparticles
Nanostructure
Neodymium lasers
Nitrogen dioxide
Operating temperature
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Pulsed lasers
Research Article
Semiconductor lasers
Sensitivity
Spectrum analysis
Synthesis gas
X-ray diffraction
YAG lasers
Zinc oxide
Zinc oxides
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Summary:In this study, aluminum-doped zinc oxide (AZO) at 0.3 wt.% was synthesized by a pulsed Nd: YAG laser with a fundamental wavelength (1064 nm). The laser beam is focused on a ZnO-doped target immersed in distilled water at two pulse energies of 200 and 400 mJ. The procedure was applied in two cases: without and with the presence of the magnetic field. AZO nanoparticles were investigated by UV–visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and electron microscopy (SEM). In addition, a mixture of metal oxide nanoparticles was used for gas-sensing application. XRD shows the enhancement of crystallization in the presence of the magnetic field. SEM images show the adoption of AZO thin nanostructures in the high surface region with applying an external magnetic field and with increasing laser power. The AZO-based syngas sensor has greater sensitivity against NO 2 gas than H 2 S gas with an optimal operating temperature of 200 °C. The use of laser energy of 400 mJ with a magnetic field leads to the creation of a nanostructure with a large surface area, which makes it highly sensitive, especially to NO 2 gas compared to other samples. The prepared active layer for the gas sensor has an acceptable sensitivity against NO2 gas more than H2S gas with an optimal operating temperature of 200 °C.
ISSN:0972-8821
0974-6900
DOI:10.1007/s12596-023-01192-z