Room temperature atomic layer deposition of niobium oxide using plasma excited humidified argon and its application to anticorrosion to hydrochloric acid

Room-temperature atomic layer deposition (RT-ALD) of iron oxide is developed with a precursor of bis(N, N′-diisopropyl-propionamidinate)iron [(DIPPA)2Fe] and plasma excited humidified Ar. Saturated conditions of (DIPPA)2Fe and plasma excited humidified Ar exposures at room temperature (23–25 °C) are investigated by in situ IR absorption spectroscopy for finding the RT-ALD process condition. Using the designated process, the growth per cycle of the iron oxide RT-ALD is confirmed as 0.15 nm/cycle based on the film thicknesses measured by the spectroscopic ellipsometer. The x-ray photoelectron spectroscopy suggests that the stoichiometry of the deposited iron oxide is closed to that of Fe2O3. The grown film is composed of partly crystallized iron oxides, confirmed by cross-sectional TEM and AFM. The RT deposited iron oxide exhibits a magnetic volume susceptibility of 1.52, which implies the applicability of the present coating for magnetic drug delivery. We discuss the surface reaction with the IR absorption spectroscopy and the quartz crystal microbalance. The (DIPPA)2Fe molecule is suggested to adsorb on the Fe2O3 surface with mixed first- and second-order reactions at RT. It is also suggested that amidinate ligands in (DIPPA)2Fe are released in the course of the adsorption and the remaining ligands are oxidized by the plasma excited humidified Ar. The RT iron oxide deposition is demonstrated, and the reaction mechanism of room-temperature ALD is discussed in this paper.

show abstract

Room temperature atomic layer deposition of nano crystalline ZnO and its application for flexible electronics

Yoshida

Saito

Sogai

et al. 2020

IEICE Trans. Electron.

View full text Add to dashboard Cite

Room temperature atomic layer deposition of niobium oxide using plasma excited humidified argon and its application to anticorrosion to hydrochloric acid

Cited by 5 publications

References 20 publications

Surface reaction mechanism of atomic layer deposition of niobium oxide: In situ characterization and first-principle study

Surface reaction mechanism of atomic layer deposition of niobium oxide: In situ characterization and first-principle study

Room-temperature atomic layer deposition of iron oxide using plasma excited humidified argon

Room temperature atomic layer deposition of nano crystalline ZnO and its application for flexible electronics

Contact Info

Product

Resources

About