213 citations · 750 across the 14 of their papers we have counts for
14 papers
Tight-binding calculations of SiGe alloy nanocrystals in SiO2 matrix
A. V. Belolipetsky, M. O. Nestoklon, I. N. Yassievich
In the empirical tight-binding approach we study the electronic states in spherical SiGe nanocrystals embedded in SiO2 matrix. The energy and valley structure is obtained as a func…
Optical orientation and alignment of excitons in ensembles of inorganic perovskite nanocrystals
M. O. Nestoklon, S. V. Goupalov, R. I. Dzhioev +12
We demonstrate the optical orientation and alignment of excitons in a two-dimensional layer of CsPbI perovskite nanocrystals prepared by colloidal synthesis and measure the ani…
Phonon decay in silicon nanocrystals
A. A. Prokofiev, A. N. Poddubny, I. N. Yassievich
The decay of the optical phonon into the two phonons of smaller energy is calculated for Si nanocrystals. The rate of the process is in the range of 1 to 10 ps. Such anharmonic pho…
Direct bandgap optical transitions in Si nanocrystals
A. A. Prokofiev, A. S. Moskalenko, I. N. Yassievich +5
The effect of quantum confinement on the direct bandgap of spherical Si nanocrystals has been modelled theoretically. We conclude that the energy of the direct bandgap at the -p…
Electron-phonon Interaction in Non-polar Quantum Dots Induced by the Amorphous Polar Environment
A. N. Poddubny, S. V. Goupalov, V. I. Kozub +1
We propose a mechanism of energy relaxation for carriers confined in a non-polar quantum dot surrounded by an amorphous polar environment. The carrier transitions are due to their…
Energy transfer processes in Er-doped SiO2 sensitized with Si nanocrystals
I. Izeddin, D. Timmerman, T. Gregorkiewicz +4
We present a high-resolution photoluminescence study of Er-doped SiO2 sensitized with Si nanocrystals (Si NCs). Emission bands originating from recombination of excitons confined i…