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Luke Bradley
Newcastle University

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Analysis of effect of annealing at high temperature on nickel oxide and zinc oxide thin film for solar cell applications Iskandar Dzulkarnain Rummaja; Nur Afiqah Hani Senin; Muhammad Idzdihar Idris; Zarina Baharudin Zamani; Radi Husin Ramlee; Luke Bradley
Indonesian Journal of Electrical Engineering and Computer Science Vol 34, No 2: May 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v34.i2.pp777-787

Abstract

The use of thin films in solar cell technology has gained substantial interest because of their potential for cost-effective and efficient energy conversion. nickel oxide (NiO) and zinc oxide (ZnO) have been used as potential materials in solar cells application especially third generation solar cells because of their good characteristics, such as high electrical conductivity, chemical stability, resistance to degradation, and abundance and low cost. However, at high temperatures, both NiO and ZnO can undergo thermal decomposition and exhibit crystal defects and grain boundaries. This work investigates high temperature annealing on the morphology, structural, and optical properties of NiO and ZnO thin films. The deposited material was annealed at 500 ℃, 600 ℃, and 700 ℃ and be characterized via scanning electron microscopy (SEM), XRD, and UV-Vi’s spectroscopy. The results showed that inceasing the annealing temperature can improve both ZnO and NiO thin films in structure and appearance. For ZnO, higher temperatures made the grains bigger and more orderly, and for NiO, the process made the grains more organized, bigger in size, and spread out more evenly. However, annealing at high temperature yields a smaller bandgap energy value for both thin films.
The development of low-cost spin coater with wireless IoT control for thin film deposition Ahmad Muhajer Abdul Aziz; Muhammad Idzdihar Idris; Zul Atfyi Fauzan Mohammed Napiah; Muhammad Noorazlan Shah Zainudin; Marzaini Rashid; Luke Bradley
Indonesian Journal of Electrical Engineering and Computer Science Vol 34, No 3: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v34.i3.pp1519-1529

Abstract

A low-cost spin coater with a wireless remote system that can deposit thin films of uniform thickness and quality at a significantly lower cost than traditional methods. The system consists of three main parts, a motorized spindle, a spin-coating head, and a control system connected to the network. The mechanical design on the mechanical part, spin coater system design with ESP32, and implementation of wireless control through visual basic. The network-enabled control system allows for real-time monitoring and adjustment of the deposition process, which can improve efficiency and reproducibility. This low-cost spin coating system represents a promising solution for organizations seeking to access thin film deposition technology at a fraction of the cost of traditional systems. By integrating wireless IoT control into low-cost spin coaters, the impact of this technology on coating uniformity will provide valuable insights for future advancements in this field.
Co-Authors Ahmad Muhajer Abdul Aziz Iskandar Dzulkarnain Rummaja Marzaini Rashid Muhammad Idzdihar Idris Muhammad Idzdihar Idris Muhammad Noorazlan Shah Zainudin Nur Afiqah Hani Senin Radi Husin Ramlee Zarina Baharudin Zamani Zul Atfyi Fauzan Mohammed Napiah