Title: Comparison of electrical properties between graphite and carbon nanotube as interdigitated electrode in TiO₂/MWCNT thick film

Authors: Azlinda Abu Bakar; Mohd Nizar Hamidon; Mohd Hanif Yaacob; Suriati Paiman; Haslina Jaafar; Wan Nursheila Wan Jusoh; Farah Nabilah Shafiee; Nor Hapishah Abdullah

Addresses: Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Puta Malaysia, 43400 UPM Serdang, Selangor, Malaysia ' Funtional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Faculty of Engineering, Department of Electrical and Electronic Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia ' Faculty of Engineering, Department of Computer and Communication System Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia ' Faculty of Science, Department of Physics, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia ' Faculty of Engineering, Department of Electrical and Electronics Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Malaysia ' Malaysians Institute of Aviation Technology, Universiti Kuala Lumpur, Jalan Jenderam Hulu, 43900 Dengkil, Selangor, Malaysia ' Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Pura Malaysia, 43400 UPM, Serdang, Malaysia ' Functional Nanotechnology Devices Laboratory, Institute of Nanoscience and Nanotechnology, Universiti Pura Malaysia, 43400 UPM Serdang, Malaysia

Abstract: A comparison in terms of electrical properties performance of graphite and carbon nanotube interdigitated electrode (IDE) with titanium dioxide multiwall carbon nanotube (TiO₂/MWCNT) as sensing materials is presented in this research work. Screen printing technique has been selected to deposit graphite and carbon nanotube conductive paste as IDE thick film on kapton substrate continued by firing at 250°C respectively. TiO₂/MWCNT paste was printed as a sensing layer followed by firing at 350°C. The electrical properties measurement were performed using I-V characteristics measurement at 2-20 V, at room temperature. The results have shown that graphite and carbon nanotube IDE produced an Ohmic contact behaviour, convincing the suitability to use as electrodes for sensor development with TiO₂/MWCNT as a sensing film. The resistance values of both graphite and carbon nanotube IDE showed a trend with increasing the input voltage, whereas the values were both increased after the layer of TiO₂/MWCNT was deposited associated with slower electron mobility by introducing semiconductor layer via sensing layer of TiO₂/MWCNT.

Keywords: interdigitated electrode; thick film; resistance; graphite; carbon nanotube.

DOI: 10.1504/IJNT.2023.135808

International Journal of Nanotechnology, 2023 Vol.20 No.11/12, pp.936 - 943

Published online: 05 Jan 2024 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article