http://dspace.nbuv.gov.ua:80/handle/123456789/114473 2026-04-16T23:13:04Z http://dspace.nbuv.gov.ua:80/handle/123456789/119222 Publication Ethics and Publication Malpractice Statement All editors, reviewers and authors, should be familiarized and take into account the Publication Ethics and Publication Malpractice Statement of the international journal “Semiconductor Physics, Quantum Electronics and Optoelectronics”. This statement is based on the COPE Code of Conduct for Journal Editors. 2014-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/118513 A model for non-thermal action of microwave radiation on oxide film/semiconductor structures Okhrimenko, O.B. A model is considered that explains mechanism of non-thermal action of microwave radiation on the thin SiO₂ (ТiO₂, Er₂O₃, Gd₂O₃) film/SiC and SiO₂/GaAs structures. It assumes that the centers of electron-hole recombination are redistributed because of resonance interaction between dislocations of certain length and microwave radiation. As a result, additional bands appear in photoluminescence (PL) spectra of the oxide film/SiC structures or intensities of some bands are redistributed in the PL spectra of the SiO₂/GaAs structure, as well as optical density of the oxide film/SiC structures changes. 2014-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/118512 Nucleation and growth kinetics of colloidal nanoparticles CdS:Mn in aqueous solution of polyvinyl alcohol Rudko, G.Yu.; Fediv, V.I.; Savchuk, A.I.; Gule, E.G.; Vorona, I.P.; Nosenko, V.V. Colloidal undoped CdS and doped CdS:Mn nanoparticles were synthesized in the solution of polyvinyl alcohol polymer, and the process of nanoparticles growth was monitored by optical absorption measurements. The inclusion of Mn²⁺ impurity was checked by electron paramagnetic resonance measurements. It is shown that the core of CdS:Mn nanoparticle is undoped. The results obtained demonstrated that the rate of the band gap value decrease during nanoparticles growth is slower for the Mn-doped nanoparticles as compared to the undoped ones. This effect was ascribed to the inhibition of nanoparticles growth in the solution containing manganese salt. The model of the adsorptive doping of CdS NPs with manganese was proposed. 2014-01-01T00:00:00Z http://dspace.nbuv.gov.ua:80/handle/123456789/118509 Efficient core-SiO₂/shell-Au nanostructures for surface enhanced Raman scattering Yukhymchuk, V.O.; Hreshchuk, O.M.; Valakh, M.Ya.; Skoryk, M.A.; Efanov, V.S.; Matveevskaya, N.A. The efficient SERS (surface enhanced Raman scattering) substrates that are films of nanoparticles (NP) of the “core–shell” type, where the core of SiO2, and the shell of gold nanoparticles, were developed in this work. Application of scanning electron microscopy and optical absorption enabled to find correlation between surface morphology of nanostructures and position of the plasmon absorption band. It helped to adjust the latter to the wavelength of exciting laser radiation. It has been shown that the designed nanostructures are able to enhance electric field of an emitting dipole not only due to adjustment of the band frequency for plasmon absorption to the wavelength of exciting laser radiation but also due to contribution of the so-called “hot spots” to enhancement of electric field scattering. Analysis of characteristics inherent to SERS substrates with nanostructures of the soil core – Au shell type has shown that they enhance the Raman signal by 5 orders higher as compared with the substrates based on SiO2 nanospheres not covered with gold nanoparticles. 2014-01-01T00:00:00Z