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Pulse Laser Deposition of HfO2 Nanoporous-Like Structure, Physical Properties for Device Fabrication

Shams B. Ali1, Sarmad Fawzi Hamza Alhasan1, Evan T. Salim2,*, Forat H. Alsultany3, Omar S. Dahham4,5

1 Laser and Optoelectronic Engineering Department, University of Technology, Baghdad, Iraq
2 Applied Science Department, University of Technology, Baghdad, Iraq
3 Al-Mustaqbal University College, Department of Medical Physics, Hillah, Iraq
4 Center of Excellence Geopolymer and Green Technology, Faculty of Engineering Technology, Universiti Malaysia Perlis, Perlis, Malaysia
5 Department of Civil Engineering, College of Engineering, Cihan University-Erbil, Kurdistan Region, Iraq

* Corresponding Author: Evan T. Salim. Email: email

Journal of Renewable Materials 2022, 10(11), 2819-2834. https://doi.org/10.32604/jrm.2022.021609

Abstract

The pulsed laser deposition (PLD) technology was used to effectively create conductive nano and micro hafnium oxide with great purity and transparency for (HfO2) nanofilms. In many optoelectronics devices and their applications, the presence of a high dielectric substance like a nano HfO2, between the metal contacts and the substrates was critical. We used the Pulsed Laser Deposition method to fabricate an Al/HfO2/p-Si Schottky barrier diode where the nanostructured HfO2 films as an intermediate layer and varied substrate temperatures. The optical result reveals a high degree of transparency (93%). The optical bandgap of deposited HfO2 films was observed to vary between 4.9 and 5.3 eV, with a value of roughly 5.3 eV at the optimal preparation condition. The morphology of the surface shows a high homogeneous nano structure with the average values of the roughness about (0.3 nm). With regard to substrate temperature, the produced factor ideality for fabricated diode was determined to be lowering and the associated values of the barrier height rose based on I-V characterization. With regard to substrate temperature, the produced factor ideality for fabricated diode was determined to be lowering and the associated values of the barrier height rose based on I-V characterization. The diode manufactured at 600°C, in particular, had a higher ideality factor value (n = 3.2).

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Cite This Article

Ali, S. B., Fawzi, S., Salim, E. T., Alsultany, F. H., Dahham, O. S. (2022). Pulse Laser Deposition of HfO2 Nanoporous-Like Structure, Physical Properties for Device Fabrication. Journal of Renewable Materials, 10(11), 2819–2834.



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