Under exposure to UV radiation in SiO2 nanoparticles compressed in the form of tablets, a broadband photoluminescence centered at around 460 nm has been observed. The luminescence intensity depends on the duration of irradiation; in course of time the luminescence intensity monotonically decreases and is established at a certain level. It is assumed that under the influence of high-intensity UV radiation new absorption centers are created on the surface of SiO2 nanoparticles, and due to the absorption of part of the UV radiation in these centers, the luminescence intensity decreases.
| Mualliflar | Шаймарданов, З.Ш., Курбанов, С.С., Уролов, Ш.З., Жалолов, Р.Р. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashr sanasi | 2019-11-15 |
| Jild | 22 |
| Son | 1 |
| Betlar | 28-32 |
| Til | Rus |
| DOI | 10.52304/.v22i1.175 |
DOI: 10.52304/.v22i1.175 · Maqolaning asl sahifasi
The research results of photosensitivity of Au-νGaAs:O-nCdS-nInP-Au heterojunction structure under various electrical circuit configuration are presented. It is experimentally shown that irrespective of the excited…
Theoretical analysis and experimental study of the interaction of light waves in a fiber coupler revealed the optimal conditions for the manufacture of fiber couplers for optical communication systems. The dependence of…
The effect of ionized impurities and microtubes on the reverse breakdown voltage of the p-n junction based on 4H-SiC obtained by low-temperature diffusion was studied. It is shown that using the equation for breakdown…
The spin-dependent size quantization of the energy spectrum of current carriers through a two-barrier semiconductor structure is theoretically researched. In this case, the spin-orbital splitting is taken into account…
The formation of the porous aluminum oxide on surface by the electrochemical method was investigated. This phenomenon is associated with simultaneous processes of formation and dissolution of the aluminum oxide in…
In the paper, the distribution of the electromagnetic field near the sample is discussed. The results are compared with the results of an earlier developed theoretical model for the field near the dielectric microsphere…
The paper is devoted to investigation of magnetization on the surface of HTSC by the magnet optical method. It has been shown that in a week external magnetic field flow easily may enter inside the superconducting…
In interactions of gold and sulfur nuclei at 10.6 and 200 GeV/nucleon, respectively, the azimuthal emission angles of particles of different types, both produced and fragments of primary nuclei were measured. Intragroup…
A new analytical exact solution of the Einstein gravitational field equations is proposed, which describes the equilibrium state of a spherical layer of anisotropic matter located in an external spherical symmetric…
The results of investigation of the developed new innovative product − oil pitch, used as the main binder in non-ferrous metallurgy are presented. The studies were carried out by modern physical[1]chemical methods…