Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films


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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering, Engineering, Electrical & Electronic


eISSN: 1178-5608



VOLUME 7 , ISSUE 5 (December 2014) > List of articles

Special issue ICST 2014

Fluctuation enhanced gas sensing using UV irradiated Au-nanoparticle-decorated WO3-nanowire films

Maciej Trawka / Janusz Smulko * / Lech Hasse / Radu Ionescu / Fatima E. Annanouch / Eduard Llobet / Claes G. Granqvist / Laszlo B. Kish

Keywords : AuNP-decorated WO3 nanowires; fluctuation enhanced sensing; UV light; noise

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 5, Pages 1-5, DOI: https://doi.org/10.21307/ijssis-2019-030

License : (CC BY-NC-ND 4.0)

Published Online: 15-February-2020



WO3 nanowires (WO3-NWs) decorated with gold nanoparticles (AuNPs) were utilized in resistive gas sensor devices to detect ethanol by use of fluctuation enhanced sensing (FES).  The experimental system records both DC resistance and fluctuations of the sensing film. Our data verify that the sensitivity and selectivity of the gas sensor are improved by applying FES when the sensor is stimulated with a combination of UV light and heating. We conclude that UV light can produce improved gas sensing at low operating temperatures for the investigated AuNPdecorated WO3-NWs films.

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[1] G. Korotcenkov, “Gas response control through structural and chemical modifications of metal oxide films: State of the art and approaches,” Sensors and Actuators B: Chemical, vol. 107, 2005, pp. 209–232.

[2] P. Heszler, R. Ionescu, E. Llobet, L. F. Reyes, J. Smulko, et al., “On the selectivity of nanostructured semiconductor gas sensors,” Physica Status Solidi B, vol. 244, 2007, pp. 4331–4335.

[3] S. R. Morrison, “Selectivity in semiconductor gas sensors,” Sensors and Actuators, vol. 12, 1987, pp. 425–440.

[4] B. Ayhan, C. Kwan, J. Zhou, L. B. Kish, K. D. Benkstein, et al., “Fluctuation enhanced sensing (FES) with a nanostructured, semiconducting metal oxide film for gas detection and classification,” Sensors and Actuators B: Chemical, vol. 188, 2013, pp. 651–660.

[5] J. Smulko, C. G. Granqvist, L. B. Kish, “On the statistical analysis of noise in chemical sensors and its application for sensing,” Fluctuation and Noise Letters, vol. 1, 2001, pp. L147–L153.

[6] A. W. Stadler, Z. Zawiślak, A. Dziedzic, D. Nowak, “Noise spectroscopy of resistive components at elevated temperature,” Metrology and Measurement Systems, vol. 21, 2014, pp. 15–26.

[7] L. B. Kish, R. Vajtai, C. G. Granqvist, “Extracting information from noise spectra of chemical sensors: Single sensor electronic noses and tongues,” Sensors and Actuators B: Chemical, vol. 71, 2000, pp. 55–59.

[8] M. Kotarski, J. Smulko, Hazardous gases detection by fluctuationenhanced gas sensing,” Fluctuation and Noise Letters, vol. 9, 2010, pp. 359–371.

[9] J. Ederth, J. Smulko, L. B. Kish, P. Heszler, C. G. Granqvist, “Comparison of classical and fluctuation-enhanced gas sensing with PdxWO3 nanoparticle films,” Sensors and Actuators B: Chemical, vol 113, 2006, pp. 310–315.

[10] M. Kotarski, J. Smulko, “Noise measurement setups for fluctuations enhanced gas sensing,” Metrology and Measurement Systems, vol. 16, 2009, pp. 457–464.

[11] A. Giberti, C. Malagùa, V. Guidia, “WO3 sensing properties enhanced by UV illumination: An evidence of surface effect”, Sensors and Actuators B: Chemical, vol. 165, 2012, pp. 59–61.

[12] F. Chávez, G. F. Pérez-Sánchez, O. Goiz, P. Zaca-Morán, R. Peña-Sierra, A. Morales-Acevedo, et al., “Sensing performance of palladiumfunctionalized WO3 nanowires by a drop-casting method,” Applied Surface Science, vol. 275, 2013, pp. 28–35.

[13] J. Kukkola, M. Mohl, A. R. Leino, J. Mäklin, N. Halonen, A. Shchukarev, et al., “Room temperature hydrogen sensors based on metal decorated WO3 nanowires,” Sensors and Actuators B: Chemical, vol. 186, 2013, pp. 90–95.

[14] S. Vallejos, P. Umek, T. Stoycheva, F. Annanouch, E. Llobet, X. Correig, P. De Marco, C. Bittencourt, C. Blackman, “Single-step deposition of Au- and Pt-nanoparticle-functionalized tungsten oxide nanoneedles synthesized via aerosol-assisted CVD, and used for fabrication of selective gas microsensor arrays”, Advanced Functional Materials, vol. 23, 2013, pp. 1313–1322.

[15] F. E. Annanouch, S. Vallejos, T. Stoycheva, C. Blackman, and E. Llobet, “Aerosol assisted chemical vapour deposition of gas-sensitive nanomaterials,” Thin Solid Films,  vol. 548, 2013, pp. 703–709.

[16] M. A. Vincenti, D. De Ceglia, V. Roppo, V., M. Scalora, “Harmonic generation in metallic, GaAs-filled nanocavities in the enhanced transmission regime at visible and UV wavelengths,” Optics Express, vol. 19, 2011, pp. 2064–2078.

[17] C. G. Granqvist, S. Green, E. K. Jonson, R. Marsal, G. A. Niklasson, et al., “Electrochromic foil-based devices: Optical transmittance and modulation range, effect of ultraviolet irradiation, and quality assessment by 1/f current noise,” Thin Solid Films, vol. 516, 2008, pp. 5921–5926.