High-Performance Sensing Behavior Using Electronic Ink of 2D SnSe2 Nanosheets

Mahendra Pawar, Sunil Kadam, Dattatray J. Late

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

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 SnSe2 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) SnSe2 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 SnSe2 layers exhibit excellent sensitivity, recovery and ability to be tune the sensing performance with thickness and can be used in lab on chip devices.

Original languageEnglish
Pages (from-to)4068-4075
Number of pages8
JournalChemistrySelect
Volume2
Issue number14
DOIs
StatePublished - 15 May 2017
Externally publishedYes

Keywords

  • Liquid Exfoliation
  • Nanosheets
  • SnSe
  • sensor

ASJC Scopus subject areas

  • General Chemistry

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