77 citations · 251 across the 6 of their papers we have counts for
6 papers
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…
Optical transitions and energy relaxation of hot carriers in Si nanocrystals
A. N. Poddubny, A. A. Prokofiev, I. N. Yassievich
Dynamics of hot carriers confined in Si nanocrystals is studied theoretically using atomistic tight binding approach. Radiative, Auger-like and phonon-assisted processes are consid…
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…
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…
Carrier relaxation in Si/SiO quantum dots
A. A. Prokofiev, S. V. Goupalov, A. S. Moskalenko +2
Carrier relaxation due to both optical and nonradiative intraband transitions in silicon quantum dots in SiO has been considered. Interaction of confined holes with optical pho…
Single-particle states in spherical Si/SiO quantum dots
A. S. Moskalenko, J. Berakdar, A. A. Prokofiev +1
We calculate ground and excited electron and hole levels in spherical Si quantum dots inside SiO in a multiband effective mass approximation. Luttinger Hamiltonian is used for…