3 papers
cond-mat.mtrl-sci2024
Etching of elemental layers in oxide molecular beam epitaxy by O2-assisted formation and evaporation of their volatile suboxide: The examples of Ga and Ge
Wenshan Chen, Kingsley Egbo, Huaide Zhang +2
The delivery of an elemental cation flux to the substrate surface in the oxide molecular beam epitaxy (MBE) chamber has been utilized not only for the epitaxial growth of oxide thi…
cond-mat.mtrl-sci2024
NiGaO interfacial layers in NiO/GaO heterojunction diodes at high temperature
Kingsley Egbo, Emily M. Garrity, William A. Callahan +6
NiO/GaO heterojunction diodes have attracted attention for high-power applications, but their high-temperature performance and reliability remain underexplored. Here we…
cond-mat.mtrl-sci2020
Vacancy defects induced changes in the electronic and optical properties of NiO studied by spectroscopic ellipsometry and first-principles calculations
Kingsley O. Egbo, Chao Ping Liu, Chinedu E. Ekuma +1
Native defects in semiconductors play an important role in their optoelectronic properties. Nickel oxide (NiO) is one of the few wide-gap p-type oxide semiconductors and its conduc…