Photonics of semiconductor and dielectric nanostructures

Work number - P 18 AWARDED

Presented by Institute of Electron Physics, Nat. Acad. Sci. Ukr.

Authors: Yu.M. Azhniuk, A.V. Gomonnai, V.M. Dzhagan, S.Ya. Kuchmiy, A.I. Nosich, O.L. Stroyuk, G.G. Tarasov, V.O. Yukhymchuk

The aim of the series of works is to solve fundamental and applied problems of photonics of semiconductor and dielectric nanostructures, namely to elucidate mechanisms of self-induced formation of semiconductor nanostructures; to find out mechanisms of interaction between quantum objects; to simulate and investigate the characteristics of hybrid (in both composition and dimensionality of confinement) nanoheterostructures; to study the dynamics of interfacial transport of charge carriers and the nature of the secondary photochemical and photocatalytic processes; to investigate external effects (including radiation) on various types of nanostructures.

The authors discovered and studied the effect of giant interdiffusion at self-assembled epitaxial formation of quantum dots (QDs) and chemical colloidal synthesis. It is shown to be stimulated by high gradients of elastic fields at the QD interface with  a substrate or a shell. This effect essentially affects the QD properties

The effect of electron excitation tunneling in hybrid nanoheterostructures formed by ensembles of nanoobjects of different type (quantum wells, quantum wires, quantum rings, QDs) is studied theoretically and experimentally

Electron and phonon states in dielectric matrix + ensemble of II-VI QDs composites are studied as well as their behaviour under external effects, namely irradiation.

The authors have formed the fundamentals of a new interdisciplinary field of study – semiconductor nanophotocatalysisand developed the technology for the fabrication of nanoobjects by colloidal techniques. It enables the application of the colloidal QDs in science and technology, namely for medicine, solar power industry, photocatalythic synthesis, etc.

Electrodynamic models of micro- and nanolasers (including those with open resonators) developed in this study are of top priority in Ukraine and worldwide. First models and algorithms are built to study terahertz wave scattering and absorption by single graphene microribbons and microdiscs as well as finite and infinite lattices on their basis.

Number of publications:334, including 9 books and chapters, 289 papers with  total impact factor of 661,83. According to the Google Scholar database, the overall citation number is 6054, the h-index is 45. Novelty and compatibility of the technical solutions is supported by 36 patents. 5 Dr.Sc. and19 Ph.D. degreeswere accomplished within the scope of this series of studies.

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