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Chemically synthesized PbS Nano particulate thin films for a rapid NO2 gas sensor Cover

Chemically synthesized PbS Nano particulate thin films for a rapid NO2 gas sensor

Materials Science-Poland
Volume 34 (2016): Issue 1 (March 2016)
By:
Open Access
|Apr 2016

Figures & Tables

Fig. 1

A schematic showing a typical SILAR technique for deposition of PbS on glass substrate from chemical solutions containing cationic and anionic precursors.
A schematic showing a typical SILAR technique for deposition of PbS on glass substrate from chemical solutions containing cationic and anionic precursors.

Fig. 2

X-ray diffraction patterns of PbS thin films deposited at different precursor concentrations.
X-ray diffraction patterns of PbS thin films deposited at different precursor concentrations.

Fig. 3

Full scan XPS spectra of PbS0:25 thin film.
Full scan XPS spectra of PbS0:25 thin film.

Fig. 4

High resolution XPS spectra of (a) Pb(4f) and(b) S(2p) core levels of the PbS0:25 thin film. TheXPS spectra are decomposed via Voigt curve fitting.
High resolution XPS spectra of (a) Pb(4f) and(b) S(2p) core levels of the PbS0:25 thin film. TheXPS spectra are decomposed via Voigt curve fitting.

Fig. 5

FE-SEM micrographs of (a) PbS0.25 (b) PbS0.25 (c) PbS0.25 (d) PbS0.25 and (e) PbS0.25 films at 25,000 magnification.
FE-SEM micrographs of (a) PbS0.25 (b) PbS0.25 (c) PbS0.25 (d) PbS0.25 and (e) PbS0.25 films at 25,000 magnification.

Fig. 6

A schematic showing typical plane and rough surface.
A schematic showing typical plane and rough surface.

Fig. 7

Variation of sensitivity with precursor concentration in PbS thin films at 150 oC.
Variation of sensitivity with precursor concentration in PbS thin films at 150 oC.

Fig. 8

Variation of NO2 gas response with operating temperature at relative humidity of 60 to 65 %.
Variation of NO2 gas response with operating temperature at relative humidity of 60 to 65 %.

Fig. 9

Variation of NO2 gas response with NO2 gas concentration at relative humidity of 60 to 65 %.
Variation of NO2 gas response with NO2 gas concentration at relative humidity of 60 to 65 %.

Fig. 10

Time response characteristics of a sensor of PbS0.25 film to NO2 at concentration 50 ppm.
Time response characteristics of a sensor of PbS0.25 film to NO2 at concentration 50 ppm.

Fig. 11

Time response characteristics for five consecutive cycles of a sensor of PbS0.25 film to NO2 at a concentration of 50 ppm.
Time response characteristics for five consecutive cycles of a sensor of PbS0.25 film to NO2 at a concentration of 50 ppm.

Fig. 12

Variation of sensitivity of PbS thin film to acetone, NH3, SO2 and NO2 at gas concentration of 50 ppm at 150 oC.
Variation of sensitivity of PbS thin film to acetone, NH3, SO2 and NO2 at gas concentration of 50 ppm at 150 oC.

Fig. 13

Schematic illustration of adsorption of O2 gas molecules on the grains of PbS material.
Schematic illustration of adsorption of O2 gas molecules on the grains of PbS material.

Fig. 14

Schematic illustration of adsorption of NO2 gas molecules on the grains of PbS material.
Schematic illustration of adsorption of NO2 gas molecules on the grains of PbS material.

Fig. 15

Schematic illustration of removal of conduction band electrons by adsorption of O2 and NO2 gas molecules and subsequent reactions on the grains of PbS material.
Schematic illustration of removal of conduction band electrons by adsorption of O2 and NO2 gas molecules and subsequent reactions on the grains of PbS material.
DOI: https://doi.org/10.1515/msp-2016-0001 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 204 - 211
Submitted on: Mar 3, 2015
Accepted on: Nov 3, 2015
Published on: Apr 27, 2016
Published by: Sciendo
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
sensor
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2016 Vishal V. Burungale, Rupesh S. Devan, Sachin A. Pawar, Namdev S. Harale, Vithoba L. Patil, V. K. Rao, Yuan-Ron Ma, Jo Eun Ae, Jin H. Kim, Pramod S. Patil, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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