Share This Article:

Selectivity Improvement of Gas Sensor Based on Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Thin Film by Using Imprinting Method

Abstract Full-Text HTML XML Download Download as PDF (Size:570KB) PP. 529-533
DOI: 10.4236/jmp.2012.37072    4,266 Downloads   8,172 Views   Citations

ABSTRACT

Selectivity improvement of gas sensor based on Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin film to ammonia gas has been studied. The PEDOT:PSS thin films were deposited on glass and FR4 substrates by using a spin-coating technique. PEDOT:PSS solution was spread on the substrate followed by spinning at fixed rate. Then, the imprinting process of gas sensor was performed by injecting ammonia gas into the spin-coating chamber. Finally, the gas sensor was dried on a controllable hot plate. Current-voltage characteristics of the films were measured by using calibrated electrometer. The results show that by imprinting of ammonia gas to the film affects the electrical conductivity of the film. It is also shown that the electron transport in the PEDOT:PSS thin film tends to be ohmic-contact. When the imprinted sensor is exposed in ammonia gas, we obtained that the sensor has short response and recovery time, a good repeatability (reversible), and higher sensitivity to ammonia gas. To this end, we found that ammonia imprinting on the surface of PEDOT:PSS thin film can improve the selectivity of the sensor to ammonia gas. It indicates that our method can be used for fabricating the sensor which has a single selectivity.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

L. Aba, Y. Yusuf, M. Mitrayana and K. Triyana, "Selectivity Improvement of Gas Sensor Based on Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Thin Film by Using Imprinting Method," Journal of Modern Physics, Vol. 3 No. 7, 2012, pp. 529-533. doi: 10.4236/jmp.2012.37072.

References

[1] J. Janata and M. Josowicz, “Conducting Polymers in Electronic Chemical Sensors,” Nature Materials, Vol. 2, No. 1, 2003, pp. 19-24.
[2] J. W. Gardner, V. K. Varadan and O. O. Awadelkarim “Microsensors, MEMS and Smart Devices,” John Wiley & Sons Ltd., Chichester, 1994.
[3] G. K. Prasad, T. P. Radhakrishnan, D. S. Kumar and M. G. Krishna, “Ammonia Sensing Characteristics of Thin Film Based on Polyelectrolyte Templated Polyaniline,” Sensors and Actuators B: Chemical, Vol. 106, No. 3, 2005, pp. 626-631. doi.10.1016/j.snb.2004.09.011,
[4] P. T. Moseley and A. J. Crocker, “Sensor Materials,” Institute of Physics Publishing Ltd, Bristol, 1996.
[5] T. Miyata, S. Kawaguchi, M. Ishii and T. Minami, “High Sensitivity Chlorine Gas Sensors Using Cu-Phthalocyanine Thin Films,” Thin Solid Films, Vol. 425, No. 1-2, 2003, pp. 255-259. doi.10.1016/S0040-6090(02)01129-X
[6] D. Nicolas-Debarnot and F. Poncin-Epaillard, “Polyaniline as a New Sensitive Layer for Gas Sensors,” Analytica Chimica Acta, Vol. 475, No. 1-2, 2003, pp. 1-15. doi.10.1016/S0003-2670(02)01229-1
[7] H. Bai and G. Shi, “Gas Sensors Based on Conducting Polymers,” Sensors, Vol. 7, No. 3, 2007, pp. 267-307. doi.10.3390/s7030267
[8] T. M. Schweizer, “Electrical Characterization and Investigation of the Piezoresistive Effect of PEDOT:PSS Thin Films,” Master Thesis, Georgia Institute of Technology, 2005.
[9] Y. Dan, Y. Cao, Tom E. Mallouk, A. T. Johnson and S. Evoy, “Dielectrophoretically Assembled Polymer Nanowires for Gas Sensing,” Sensors and Actuators B, Vol. 125, No. 1, 2007, pp. 55-59. doi.10.1016/j.snb.2007.01.042.
[10] H. Yan and K. H. Row, “Characteristic and Synthetic Approach of Molecularly Imprinted Polymer,” International Journal of Molecular Sciences, Vol. 7, No. 5, 2006, pp. 155-178. doi.10.3390/i7050155
[11] Khairurrijal, M. Abdullah, A. Suhendi, M. M. Munir and A. Surachman, “A Simple Microcontroller-Based Current Electrometer Made from LOG112 And C8051F006 for Measuring Current in Metal-Oxide-Semiconductor Devices,” Measurement Science and Technology, Vol. 18, No. 9, 2007, pp. 3019-3024. doi:10.1088/0957-0233/18/9/037.
[12] Khairurrijal, M. Abdullah, A. Suhendi, M. M. Munir and A. Surachman, “Low Cost and User-friendly Electronic Components Characterization System for Undergraduate Students,” WSEAS Transactions on Advances in Engineering Education, Vol. 3, No. 11, 2006, pp. 971-976.
[13] H. Chen, “Modulation Effects on Organic Electronics,” Ph.D. Thesis, Georgia Institute of Technology, 2005.
[14] H. J. Zheng, Y. D. Jiang, J. H. Xu and Y. J. Yang, “Gas Sensitivity of Poly (3,4-ethylene dioxythiophene) Prepared by a Modified LB Film Method,” Journal of Wuhan University of Technology—Material Science Edition, Vol. 26, No. 1, 2011, pp. 70-74.
[15] C.-Y. Lin, J.-G. Chen, C.-W. Hu, J. J. Tunney and K.-C. Ho, “Using a PEDOT:PSS Modified Electrode for Detecting Nitric Oxide Gas,” Sensors and Actuators B: Chemical, Vol. 140, No. 2, 2009, pp. 402-406. doi.10.1016/j.snb.2009.04.041.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.