Creation Of Optoelectronic Devices Research Articles

Анализ механизма формирования фотонных запрещенных зон в гетероструктурах, получаемых при осаждении тонких пленок на поверхность коллоидных пленок

Photonic crystal films obtained as a result of self-organization of colloidal spherical particles are the basis for the formation of various micro- and nanostructures. Prospects for their use are associated with the creation of optoelectronic devices, optical and semiconductor sensors, and microelectromechanical systems. The paper presents an analysis of the mechanism of a photonic band gap formation in heterostructures obtained by vacuum deposition of a functional material on the surface of a photonic crystal colloidal film with an opal matrix structure. The effects of Bragg diffraction on the layers formed in such a structure are considered. It is shown that the introduction of the deposited material into the interspherical voids of the colloidal film can significantly affect the parameters of the photonic band gap. An example of an analysis of a photonic forbidden layered heterostructure formed during the deposition of nickel on a colloidal silicon dioxide film is presented.

Plasmonic Near‐Complete Optical Absorption and Its Applications

AbstractNear‐complete absorption of light has the potential to underpin advances in photodetection, advanced chemistry, coloration of materials, and energy. This review paper reports recent progress on the development of metasurfaces and thin film structures that produce strong absorption bands in the visible and longer wavelength regions of the electromagnetic spectrum, due in part to the excitation of plasmonic resonances. Proof‐of‐concept demonstrations are discussed for applications of these in chemical sensing, the generation of structural color, the creation of optoelectronic devices, and photocatalysis. Emerging future applications are also discussed.

Fragmentation of Manganese Phthalocyanine Films by Laser Radiation

The study of MPc is motivated by the prospects of the creation of optoelectronic devices that operate in the visible light range. The combination of their physico-chemical and semiconducting properties makes them the promising material for cheap thermo-stable organic optoelectronic devices. In connection with this the question of degradation of macrocyclic phthalocyanine when exposed by harsh environments, in particular laser radiation, is very actual The studies of MPc's degradation under electron beam and pyrolysis is well Pyrolysis of polymeric cobalt phthalocyanine [ was carried out at 500 - 1000°C, the mass spectra were recorded across 0.6 - 3.6 minutes. The proposed mechanism of initial thermal degradation leads to the isoindole derivatives The paper presents results of a study of fragmentation of manganese phthalocyanine films that are in the condensed state on a solid surface by means of laser irradiation (λ=532 nm), i.e. in the spectral region of absorption