Autor: Šikola, T. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure
Autorzy:: Křápek, V.
Klenovský, P.
Šikola, T.
Powiązania:: https://bibliotekanauki.pl/articles/1398562.pdf
Data publikacji:: 2016-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.35.-y
73.21.La
81.05.Ea
Opis:: We have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAs_{1-y}Sb_y capping layer. The character of the confinement can be adjusted by the Sb content. We have found that upon the transition from type-I to type-II confinement the hole wave functions change the topology from a compact shape to a two-segment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at narticular compositions. Additionally, a high exciton radiative recombination probability is preserved even in type-II. This allows to design strongly luminescent quantum dots with naturally low fine structure splitting, which could serve as sources of entangled photon pairs for quantum communication.
Źródło:: Acta Physica Polonica A; 2016, 129, 1a; A-66-A-69
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Modeling of plasmon-enhanced photoluminescence of Si nanocrystals embedded in thin silicon-rich oxinitride layer
Autorzy:: Édes, Z.
Křápek, V.
Šikola, T.
Powiązania:: https://bibliotekanauki.pl/articles/1156375.pdf
Data publikacji:: 2016-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.20.Mf
78.55.Qr
42.50.Nn
78.20.Bh
Opis:: Plasmon-enhanced photoluminescence of silicon nanocrystals embedded in silicon-rich oxinitride thin film is calculated using finite-difference time-domain simulations. Emitters are represented as point-like dipoles and the photoluminescence enhancement is calculated depending on the emitter's position and polarization with respect to the plasmonic metal nanoparticle placed on top of the layer. We show that the photoluminescence enhancement is dominated by the excitation enhancement even for tuning the metal nanoparticle size to the emission wavelength.
Źródło:: Acta Physica Polonica A; 2016, 129, 1a; A-70-A-72
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Analysis of Thin Films by Time-of-Flight Low Energy Ion Scattering
Autorzy:: Průša, S.
Kolíbal, M.
Bábor, P.
Mach, J.
Šikola, T.
Powiązania:: https://bibliotekanauki.pl/articles/2047292.pdf
Data publikacji:: 2007-03
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 68.49.Sf
81.05.Cy
68.55.-a
81.15.Ef
Opis:: In the paper the design and application of a time-of-flight low energy ion scattering instrument built into an UHV complex deposition and analytical apparatus is described. A special attention is aimed at demonstrating the ability of time-of-flight low energy ion scattering to analyse near-to-surface layers of thin films prepared both ex situ and in situ. It is shown that the broadening of peaks in time-of-flight low energy ion scattering spectra can be attributed to multiple scattering and inelastic losses of ions in deeper layers. As a result of that, the peak width of ultrathin films depends on their thickness.
Źródło:: Acta Physica Polonica A; 2007, 111, 3; 335-341
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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