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High‐Performance Sensing Behavior Using Electronic Ink of 2D SnSe 2 Nanosheets
Author(s) -
Pawar Mahendra,
Kadam Sunil,
Late Dattatray J.
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700261
Subject(s) - materials science , exfoliation joint , x ray photoelectron spectroscopy , raman spectroscopy , layer (electronics) , optoelectronics , nanotechnology , humidity , inkwell , chemical engineering , composite material , graphene , optics , physics , engineering , thermodynamics
Most of the recent research work on layered chalcogenides is understandably focused on single atomic layers. However, it is uncertain if the single layer units are most ideal structures for enhanced gas‐solid interactions. To probe this concern, we have synthesized few layer thick SnSe 2 nanosheets ink using liquid exfoliation method. The morphology, thickness / layering and elemental analysis of the sheets were characterized by using SEM, TEM, AFM, Raman spectroscopy and by XPS. The two dimensional (2D) SnSe 2 nanosheets sensor device with different thicknesses was assessed for the humidity and gas sensing performances with exposure to humidity in different conditions. The results show that compared to the bulk / thicker counterpart, sensor device of few SnSe 2 layers exhibit excellent sensitivity, recovery and ability to be tune the sensing performance with thickness and can be used in lab on chip devices.