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Investigation of Pt and Pd Modified WO3 and ZnO Based Thin Film Sensors for Ethanol Sensing

  • Subhashis Roy
  • Anup Dey
  • Bikram Biswas
  • Subir Kumar Sarkar
Article
  • 71 Downloads

Abstract

Ethanol sensors based on different WO3 and ZnO structures are studied in the present work. The XRD and SEM processes are used to characterize the sensing layer’s surface morphology which reveals the presence of nanoparticle in sensing layer. Further reducing the nanoparticle diameter by the addition of palladium (Pd) and platinum (Pt) for both the sensors (ZnO and WO3) gives good results on sensitivity, operating temperature, response time and recovery time. Nanoparticle diameter for undoped WO3, Pd-modified WO3 and Pt-modified WO3 based sensors is 11.8, 6 and 5.4 nm, whereas nanoparticle diameter for undoped, Pd-modified and Pt-modified ZnO based sensors is 20, 14 and 11 nm, respectively. Analysis of dynamic response of the sensors when exposed to different concentrations of ethanol vapour (from 500 to 10,000 ppm) and various temperatures indicate the improvement in sensitivity up to 77.2% for WO3 and 74.6% for ZnO based sensors.

Keywords

microscopy nanomaterials nanoprocessing Pd Pt semiconductors WO3 ZnO 

References

  1. 1.
    E. Comini, G. Faglia, G. Sberveglieri, Y.X. Li, W. Wlodarski, and M.K. Ghantasala, Sensitivity Enhancement Towards Ethanol and Methanol of TiO2 Films Doped with Pt and Nb, Sens. Actuators B Chem., 2000, 64(1–3), p 169–174CrossRefGoogle Scholar
  2. 2.
    W. Zeng, T. Liu, and Z. Wangb, Impact of Nb Doping on Gas-Sensing Performance of TiO2 Thick-Film Sensors, Sens. Actuators B Chem., 2012, 166–167, p 141–149CrossRefGoogle Scholar
  3. 3.
    N.S. Ramgir, M. Kaur, P.K. Sharma, N. Datta, S. Kailasaganapathi, S. Bhattacharya, A.K. Debnath, D.K. Aswal, and S.K. Gupta, Ethanol Sensing Properties of Pure and Au Modified ZnO Nanowires. Sens. Actuators B Chem., 2013, 187, p 313–318Google Scholar
  4. 4.
    M. Echizen et al., Comparison of the Electrical Properties of ZnO Thin Films on Different Substrates by Pulsed Laser Deposition, Integr. Ferroelectr. Int. J., 2012, 133(1), p 9–14CrossRefGoogle Scholar
  5. 5.
    C. Klingshirn, Review ZnO: Material, Physics and Applications, ChemPhysChem, 2007, 8(6), p 782–803CrossRefGoogle Scholar
  6. 6.
    Huiwu Long, Wen Zeng, and He Zhang, Synthesis of WO3 and Its Gas Sensing: A Review, J. Mater. Sci. Mater. Electron., 2015, 26, p 4698–4707CrossRefGoogle Scholar
  7. 7.
    C. Wang, L. Yin, L. Zhang, D. Xiang, and R. Gao, Metal Oxide Gas Sensors: Sensitivity and Influencing Factors, Sensors, 2010, 10, p 2088–2106CrossRefGoogle Scholar
  8. 8.
    J.S. Wright, W. Lim, D.P. Norton, S.J. Pearton, F. Ren, J.L. Johnson, and A. Ural, Nitride and Oxide Semiconductor Nanostructured Hydrogen Gas Sensors, Semicond. Sci. Technol., 2010, 25, p 024002CrossRefGoogle Scholar
  9. 9.
    X. Ding, D. Zeng, and C. Xie, Controlled Growth of SnO2 Nanorods Clusters Via Zn Doping and Its Influence on Gas-Sensing Properties, Sens. Actuators B Chem., 2010, 149(2), p 336–344CrossRefGoogle Scholar
  10. 10.
    N. Banerjee, S. Roy, and P. Bhattacharyya, High Dynamic Range Methanol Sensor Based on Aligned ZnO Nanorods, IEEE Sens. J., 2013, 13(5), p 1669–1676CrossRefGoogle Scholar
  11. 11.
    Y. Kwon et al., Enhanced Ethanol Sensing Properties of TiO2 Nanotube Sensors, Sens. Actuators B Chem., 2012, 173, p 441–446CrossRefGoogle Scholar
  12. 12.
    H.-J. Kim and J.-H. Lee, Highly Sensitive and Selective Gas Sensors Using p-Type Oxide Semiconductors: Overview, Sens. Actuators B Chem., 2014, 192, p 607–627CrossRefGoogle Scholar
  13. 13.
    A.S. Zoolfakar, M.Z. Ahmad, R.A. Rani, J.Z. Ou, S. Balendhran, S. Zhuiykov, K. Latham, W. Wlodarski, and K. Kalantar-zadeh, Nanostructured Copper Oxides as Ethanol Vapour Sensors, Sens. Actuators B Chem., 2013, 185, p 620–627CrossRefGoogle Scholar
  14. 14.
    F. Wang, H. Li, Z. Yuan, Y. Sun, F. Chang, H. Deng, L. Xie, and H. Lic, A Highly Sensitive Gas Sensor Based on CuO Nanoparticles Synthetized Via a Sol–Gel Method, RSC Adv., 2016, 6(83), p 79343CrossRefGoogle Scholar
  15. 15.
    A. Mirzaei, K. Janghorban, B. Hashemi, M. Bonyani, S.G. Leonardi, and G. Neri, Highly Stable and Selective Ethanol Sensor Based on α-Fe2O3 Nanoparticles Prepared by Pechini Sol–Gel Method, Ceram. Int., 2016, 42(5), p 6136–6144CrossRefGoogle Scholar
  16. 16.
    B. Kantha, S. Roy, and S.K. Sarkar, Implementation of Pd Modified WO3 Thin Film Gas Sensing System with Bulk-CMOS and SOI-CMOS for Monitoring Leakage of Hydrogen Gas, J. Nanoelectron. Optoelectron., 2015, 10, p 1–8CrossRefGoogle Scholar
  17. 17.
    A. Dey, B. Kantha, and S.K. Sarkar, Sol-Gel Grown Pd Modified WO3 Thin Film Based Methanol Sensor and the Effect of Annealing Temperatures, Microsyst. Technol., 2017, 23(9), p 4195–4201CrossRefGoogle Scholar
  18. 18.
    S. Roy, A. Dey, B. Biswas, and S.K. Sarkar, Analytical Modeling of Voltage to Time Conversion Circuit for Gas Sensing System and Some Experimental Studies, J. Nanoelectron. Optoelectron., 2017, 12, p 1–8CrossRefGoogle Scholar
  19. 19.
    T. Lei, Q. Denga, S. Zhang, S. Cai, and C. Xie, Fast Identification of CO by Using Single Pt-Modified WO3 Sensing Film Based on Optical Modulation, Sens. Actuators B Chem., 2016, 232, p 506–513CrossRefGoogle Scholar
  20. 20.
    Y. Zhang, X. Jiaqiang, X. Pengcheng, Y. Zhu, X. Chen, and W. Yu, Decoration of ZnO Nanowires with Pt Nanoparticles and their Improved Gas Sensing and Photocatalytic Performance, Nanotechnology, 2010,  10.1088/0957-4484/21/28/285501 Google Scholar
  21. 21.
    S. Roy, B. Kantha, and S.K. Sarkar, Study the Effect of Catalytic Metal Contacts on Ethanol Vapour Sensing Performance of WO3-Si Hetero-Structure Sensor, in Computational Science and Engineering Proceedings of the International Conference on Computational Science and Engineering (ICCSE), pp. 243–246, 2016.  https://doi.org/10.1201/9781315375021-48.

Copyright information

© ASM International 2017

Authors and Affiliations

  • Subhashis Roy
    • 1
  • Anup Dey
    • 1
  • Bikram Biswas
    • 1
  • Subir Kumar Sarkar
    • 1
  1. 1.Department of Electronics and Telecommunication EngineeringJadavpur UniversityKolkataIndia

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