280 citations · 860 across the 9 of their papers we have counts for
7 papers · 1 filter
Quantum tailoring of electronic properties in covalently functionalized graphene: application to ammonia gas detection
A. Dammak, F. Raouafi, A. Cavanna +5
Functionalized graphene offers great potential in the field of rapid detection of gases at room temperature. We performed first-principles calculations to study the suitability of…
Potential-inserted quantum well design for quantum cascade terahertz lasers
R. Benchamekh, J. -M. Jancu, P. Voisin
We report on a new design of terahertz quantum cascade laser based on a single, potential-inserted quantum well active region. The quantum well properties are engineered through si…
Tight-binding calculations of image charge effects in colloidal nanoscale platelets of CdSe
R. Benchamekh, N. A. Gippius, J. Even +6
CdSe nanoplatelets show perfectly quantized thicknesses of few monolayers. They present a situation of extreme, yet well defined quantum confinement. Due to large dielectric contra…
An electronic model for self-assembled hybrid organic/perovskite semiconductors: reverse band edge electronic states ordering and spin-orbit coupling
J. Even, L. Pedesseau, M. -A. Dupertuis +2
Based on density functional theory, the electronic and optical properties of hybrid organic/perovskite crystals are thoroughly investigated. We consider the mono-crystalline 4FPEPI…
STM images of sub-surface Mn atoms in GaAs: evidence of hybridization of surface and impurity states
J. -M. Jancu, J. -Ch. Girard, M. Nestoklon +3
We prove that scanning tunneling microscopy (STM) images of sub-surface Mn atoms in GaAs are formed by hybridization of the impurity state with intrinsic surface states. They canno…
Tetragonal and trigonal deformations in zinc-blende semiconductors : a tight-binding point of view
J. -M. Jancu, P. Voisin
The deformation potentials of cubic semiconductors are re-examined from the point of view of the extended-basis tight-binding model. Previous parametrizations had fail…
Free-carrier screening of polarization fields in wurtzite GaN/InGaN laser structures
F. Della Sala, A. Di Carlo, P. Lugli +4
The free-carrier screening of macroscopic polarization fields in wurtzite GaN/InGaN quantum wells lasers is investigated via a self-consistent tight-binding approach. We show that…