Merid Legesse
Khalifa University
10 Papers
34 Citations
Merid Legesse is an academic researcher from Khalifa University. The author has contributed to research in topics: Band gap & Density functional theory. The author has an hindex of 6, co-authored 10 publications. Previous affiliations of Merid Legesse include Tyndall National Institute.
Chat about Author
Papers
Low Valence Cation Doping of Bulk Cr2O3: Charge Compensation and Oxygen Vacancy Formation
TL;DR: In this paper, density functional theory (DFT) calculations with a Hubbard + U correction were carried out on pure and metal-doped bulk Cr2O3 to examine the effect of doping on the electronic and geometric structure.
72
Band gap tuning in aluminum doped two-dimensional hexagonal boron nitride
Merid Legesse,Sergey N. Rashkeev,Hamed Ben Mohamed Saidaoui,Fedwa El Mellouhi,Said Ahzi,Fahhad H. Alharbi +5 more
TL;DR: In this paper, the authors show that the band gap in aluminum doped two-dimensional hexagonal boron nitride (2D-h-BN) layers strongly depends on Al concentration.
28
Revisiting the Dependence of the Optical and Mobility Gaps of Hydrogenated Amorphous Silicon on Hydrogen Concentration
TL;DR: In this paper, the dependence of the optical and mobility gaps in fully saturated and undersaturated a-Si:H has been investigated, and it is shown that at saturation, both gaps converge to a value independent of the hydrogen content.
27
Modifying the band gap and optical properties of Germanium nanowires by surface termination
TL;DR: In this paper, the authors apply the generalised gradient approximation of density functional theory (GGA-DFT) and hybrid DFT to study the effect of diameter and surface termination on the band gap of (001), (110) and (111) oriented germanium nanowires.
16
Tunable high workfunction contacts: Doped graphene
TL;DR: In this paper, p-doped graphene is investigated using first principle calculations, as a potential high-work function contact electrode material for optoelectronic device applications, and it is shown that chemical doping based on the adsorption of different non-metallic adatoms on graphene allows tuning the work function which can reach as high as 5.76
12