https://app.mypolycc.edu.my/journal/index.php/PMJET/issue/feed 2025-05-11T02:58:09+08:00 Dr. Che Zawiyah Che Hasan journalpmjet@mohe.gov.my Open Journal Systems <p>Politeknik &amp; Kolej Komuniti Journal of Engineering and Technology (PMJET) is an open-access, peer-reviewed journal published biannually, in June and November, by the Pusat Penyelidikan dan Inovasi under the Jabatan Pendidikan Politeknik dan Kolej Komuniti, Kementerian Pendidikan Tinggi Malaysia. </p> <p align="justify">The journal aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussion of new developments in engineering, technology, and science.</p> <p>The scope of the journal includes, but is not limited to, the following areas:</p> <ul> <li>Electrical and Electronics Engineering</li> <li>Mechanical and Manufacturing Engineering</li> <li>Civil Engineering</li> <li>Emerging Technology</li> </ul> <p align="justify">Articles which describe the theory and its application to practice are welcome, as are those which illustrate the transfer of multi-disciplinary techniques from other disciplines. Articles of carefully executed experimental work, which are soundly interpreted, are also welcome. The overall focus is on original and rigorous research results with generic significance.</p> <p align="justify">This journal is indexed by <strong><a href="https://myjurnal.mohe.gov.my/public/browse-journal-view.php?id=1015" target="_blank" rel="noopener">MyJurnal</a></strong>, <strong><a href="https://scholar.google.com/citations?user=EUjezOkAAAAJ&amp;hl=en" target="_blank" rel="noopener">Google Scholar</a></strong> and <a href="https://portal.issn.org/resource/ISSN/0128-2883" target="_blank" rel="noopener"><strong>ROAD</strong>.</a></p> https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/691 2025-03-02T13:43:19+08:00 N.D.M. Said nordamsyik@gmail.com M.Z. Sahdan zainizan@uthm.edu.my F. Adriyanto feri.adriyanto@staff.uns.ac.id

<p>Titanium dioxide (TiO₂) is widely recognized for its excellent electronic properties, particularly in gas-sensing applications. However, its large optical band gap limits electron transitions between the valence and conduction bands, restricting its full potential. This study investigates the fabrication of TiO₂ thin films using the sol-gel spin-coating method, with varying concentrations of titanium (IV) butoxide: 1.0 ml, 1.5 ml, and 2.0 ml. The primary objective is to optimise the concentration and analyse its impact on the films', morphological, topography and optical properties. To achieve this, the films were characterised using Field Emission Scanning Electron Microscopy (FE-SEM) and Atomic Force Microscopy (AFM) to evaluate surface morphology, cross-sectional structure, grain size, and roughness. The optimised concentration of 2.0 ml titanium (IV) butoxide produced films with a uniform coating, enhanced by solution ageing and controlled annealing temperature. FE-SEM images revealed a combination of nano-sized and micro-sized particles, with an increase in grain size correlating to pile-up at grain boundaries and an increase in roughness (3.914 nm). Additionally, UV spectroscopy analysis showed a reduced optical band gap of 3.20 eV and high transmittance. These results suggest that TiO₂ thin films, with their promising electronic and optical properties, hold significant potential for applications in gas sensors and solar cells.</p>

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