Characterization and Ammonia Sensing Properties of 2D SnS2/SnO2−x Flakes-Based Films
S. G. Leonardi,
W. Wlodarski,
S. Ippolito,
Y. Li,
A. Wisitsoraat,
N. Donato,
G. Neri
Affiliations
S. G. Leonardi
Department of Engineering, University of Messina, Messina 98166, Italy
W. Wlodarski
School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
S. Ippolito
School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
Y. Li
School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
A. Wisitsoraat
Nanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, Thailand
N. Donato
Department of Engineering, University of Messina, Messina 98166, Italy
G. Neri
Department of Engineering, University of Messina, Messina 98166, Italy
Hybrid SnS2-SnO2−x flaked nanostructures were obtained from 2D-SnS2 flakes deposited as a thin sensing film onto a conductometric transducing platform and annealed in air. The formation of 2D-SnS2/SnO2−x mixed phases and the materials morphologies were investigated by in situ Micro-Raman spectroscopy and SEM-EDX analysis. As annealing temperature of the sensitive film increases, the response towards ammonia increases showing a maximum at 250 °C. This behavior can be explained on the basis of the morphological modification and the formation of mixed phases.
