73 citations · 151 across the 11 of their papers we have counts for
12 papers
Hydrogen at GaN(0001) surface control of Fermi level pinning: Mg activation of p-type conductivity -- Nakamura process deciphered
Konrad Sakowski, Pawel Strak, Pawel Kempisty +2
Ab initio calculations were used to disentangle the mystery of Nakamura activation of p-type in Mg doped MOVPE grown gallium nitride, the key process leading to the 2014 Nobel Priz…
Role of quasi-Fermi levels in Si- and Mg-related optical absorption in nitride laser diodes (LDs): material context
Konrad Sakowski, Cyprian Sobczak, Pawel Strak +5
Optical absorption and reabsorption of light emitted from active regions in nitride laser diodes (LDs) have been shown to reduce the light extraction efficiency of these devices. I…
Polarization spontaneous and piezo: fundamentals and their implementation in ab initio calculations
Pawel Strak, Pawel Kempisty, Konrad Sakowski +5
Fundamental properties of spontaneous and piezo polarization are reformulated and critically reviewed. It was demonstrated that Landau definition of polarization as a dipole densit…
Coulomb contribution to Shockley-Read-Hall (SRH) recombination
Konrad Sakowski, Pawel Strak, Pawel Kempisty +6
Defect-mediated nonradiative recombination, known as Shockley-Read-Hall (SRH) recombination is reformulated. The introduced model considers Coulomb attraction between charged deep…
Macrosteps dynamics and the growth of crystals and epitaxial layers
Stanislaw Krukowski, Konrad Sakowski, Paweł Strak +3
Step pattern stability of the vicinal surfaces during growth was analyzed using various surface kinetic models. It was shown that standard analysis of the vicinal surfaces provides…
Polarization doping ab initio verification of the concept charge conservation and nonlocality
Ashfaq Ahmad, Pawel Strak, Pawel Kempisty +10
In this work, we study the emergence of polarization doping in AlxGa1-xN layers with graded composition from a theoretical viewpoint. We demonstrate that the charge conservation la…