104 citations · 279 across the 6 of their papers we have counts for
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A first-principles study of carbon-related energy levels in GaN: Part II - Complexes formed by carbon and hydrogen, silicon or oxygen
Masahiko Matsubara, Enrico Bellotti
This work presents an in-depth investigation of the properties of complexes composed of hydrogen, silicon or oxygen with carbon, which are major unintentional impurities in undoped…
Doping anatase TiO2 with group V-b and VI-b transition metal atoms: a hybrid functional first-principles study
Masahiko Matsubara, Rolando Saniz, Bart Partoens +1
We investigate the role of transition metal atoms of group V-b (V, Nb, and Ta) and VI-b (Cr, Mo, and W) as n- or p-type dopants in anatase TiO2 using thermodynamic principles and d…
A first-principles study of carbon-related energy levels in GaN. Part I - complexes formed by substitutional/interstitial carbons and gallium/nitrogen vacancies
Masahiko Matsubara, Enrico Bellotti
Various forms of carbon based complexes in GaN are studied with first-principles calculations employing Heyd-Scuseria-Ernzerhof hybrid functional within the framework of density fu…
Attracting shallow donors: Hydrogen passivation in (Al,Ga,In)-doped ZnO
Masahiko Matsubara, Mozhgan N. Amini, Rolando Saniz +2
The hydrogen interstitial and the substitutional Al_Zn, Ga_Zn and In_Zn are all shallow donors in ZnO and lead to n-type conductivity. Although shallow donors are expected to repel…