25 citations · 104 across the 19 of their papers we have counts for
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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…
Fundamentals of the metal contact to p-type GaN: new multilayer design
Konrad Sakowski, Paweł Strak, Stanislaw Krukowski
Electrical properties of contact to p-type nitride semiconductor devices, based on gallium nitride were simulated by ab initio and by drift-diffusion calculations. The contact elec…
Augmentation of the Electron Counting Rule with Ising Model
Karol Kawka, Pawel Kempisty, Konrad Sakowski +4
On semiconductor growth surfaces, surface reconstructions appear. Estimation of the reconstructed structures is essential for understanding and controlling growth phenomena. In thi…
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…
General aspects of the vapor growth of semiconductor crystals - a study based on DFT simulations of the NH3/NH2 covered GaN(0001) surface in hydrogen ambient
Pawel Kempisty, Pawel Strak, Konrad Sakowski +1
Vapor growth of semiconductors is analyzed using recently obtained dependence of the adsorption energy on the electron charge transfer between the surface adsorbed species and the…
Energy of adsorption at semiconducting surfaces with Fermi level differently pinned -- ab initio study
Paweł Kempisty, Paweł Strak, Konrad Sakowski +1
It is shown that adsorption energy at semiconductor surfaces critically depends on the charge transfer to or from the adsorbed species. For the processes without the charge transfe…