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

Published: 08 May 2024
Led by Ts. Dr. Norfarariyanti binti Parimon
Ts. Dr. Norfarariyanti binti Parimon has been engaged in the fabrication and characterization of metal oxide semiconductor-based sensing devices since beginning her Ph.D. studies in 2018.  Her research focuses primarily on the development of p-type nickel oxide (NiO) nanostructures using the immersion method for humidity sensor applications. 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 addition, she has also worked with a range of n-type semiconductors, including zinc oxide (ZnO), titanium dioxide (TiO₂), hematite (Fe₂O₃), and tin oxide (SnO₂). 

Despite the potential of NiO-based humidity sensors, they are elatively underexplored and poorly understood. When compared to their n-type counterparts, p-type metal oxide materials typically exhibit weaker sensing properties at similar morphologies and sizes. Recognizing the huge challenges in fabricating high-performance p-type metal oxide sensors, her research is centered on overcoming these obstacles

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. She has also successfully copyrighted 12 of her research works. 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 her research collaborations with Universiti Teknologi MARA (UiTM) to improve the performance of current humidity sensors. Beyond that, she is expanding her research portfolio into triboelectric nanogenerator and supercapacitor applications, working closely with her master's and Ph.D students.

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

Further reading:
https://link.springer.com/article/10.1007/s10854-019-01330-z
https://link.springer.com/article/10.1007/s10854-020-03719-7
https://journals.sagepub.com/doi/full/10.1177/1847980420982788
https://www.sciencedirect.com/science/article/abs/pii/S0025540818338601

FESEM Image of NiO Nanoflowers at Different Immersion Temperatures:  
75 °C (left)  and  95 °C (right)

"Metal oxides are revolutionizing semiconductor technology, driving innovation in advanced electronic devices."

- Ts. Dr. Norfarariyanti Binti Parimon