Fabrication Process and Characterization of Metal Oxide Semiconductor-Based Sensing Devices

Led by Ts. Dr. Norfarariyanti binti Parimon.
Ts. Dr. Norfarariyanti binti Parimon is a Senior Lecturer in the Electronic Engineering (Computer) Program at the Faculty of Engineering, Universiti Malaysia Sabah (UMS), where she has been serving with UMS since 2010. She completed her Ph.D from Universiti Teknologi MARA in 2021 in Electrical Engineering with a specialization in Material Sciences and Nano-Engineering. 

Since starting her Ph.D studies in 2018, she has been engaged in the fabrication process and characterization of metal oxide semiconductor-based sensing devices. Apart from n-type zinc oxide (ZnO), titanium dioxide (TiO2), hematite (Fe2O3), and tin oxide (SnO2), her research work focuses more on the fabrication and characterization of p-type nickel oxide (NiO) nanostructures through the immersion method for the application of humidity sensors. She investigated the effects of the immersion time, immersion and annealing temperatures, doping concentration and element, and nanocomposite on the structural, optical, electrical, and humidity sensing performance of the NiO nanostructures.

In general, NiO-based humidity sensors have not been fully explored or understood in all different configurations. More precisely, limited reports comprehensively discuss NiO nanostructures for humidity sensing applications. This is due to the fact that the sensing properties of p-type metal oxide materials are reported to be relatively weak compared to the n-type if both materials share similar morphologies and sizes. This situation reveals that the fabrication of p-type metal oxide for high-performance sensor applications remains a huge challenge and attracts her attention to explore.

Since 2018, she has published more than 20 manuscripts in various journals, including high-impact journals such as the Journal of Materials Science: Materials in Electronics, Nanomaterials and Nanotechnology, Materials Research Bulletin, Nano-Structures & Nano-Objects, and Materials Chemistry and Physics. In addition, she has successfully copyrighted 12 of her research work. She has also participated in over 30 national and international competitions and won several gold medals and special awards, including at ITEX, MTE, PECIPTA, and iCAN. To date, Ts. Dr. Norfarariyanti is continuing his research collaboration with researchers at UiTM to improve the performance of current humidity sensors. Beyond that, she is diversifying her research in triboelectric nanogenerator and supercapacitor applications with her master's and Ph.D students.