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Materials Science-Poland
Édition 34 (2016): Edition 1 (March 2016)
Accès libre
Chemically synthesized PbS Nano particulate thin films for a rapid NO
2
gas sensor
Vishal V. Burungale
Vishal V. Burungale
,
Rupesh S. Devan
Rupesh S. Devan
,
Sachin A. Pawar
Sachin A. Pawar
,
Namdev S. Harale
Namdev S. Harale
,
Vithoba L. Patil
Vithoba L. Patil
,
V. K. Rao
V. K. Rao
,
Yuan-Ron Ma
Yuan-Ron Ma
,
Jo Eun Ae
Jo Eun Ae
,
Jin H. Kim
Jin H. Kim
et
Pramod S. Patil
Pramod S. Patil
| 27 avr. 2016
Materials Science-Poland
Édition 34 (2016): Edition 1 (March 2016)
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Article Category:
Research Article
Publié en ligne:
27 avr. 2016
Pages:
204 - 211
Reçu:
03 mars 2015
Accepté:
03 nov. 2015
DOI:
https://doi.org/10.1515/msp-2016-0001
Mots clés
sensor
,
© Wroclaw University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig. 1
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.
Fig. 3
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.
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.
Fig. 6
A schematic showing typical plane and rough surface.
Fig. 7
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 %.
Fig. 9
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.
Fig. 11
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.
Fig. 13
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.
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.