S.X. Suleymanov

This study investigates the effect of co-doping with nanographene on the properties of FTO layers produced by spray pyrolysis. The results show that co-doping with nanographene enhances phase separation processes within the bulk of the FTO layer. The inhomogeneities formed during phase separation are depleted of fluorine compared to the film bulk. Co-doping with nanographene also significantly modifies the optical properties of the FTO layers. Specifically, it alters the position and intensity of the peaks in the reflection spectra, indicating a change in the nature of the absorbing centers. Furthermore, the optical bandgap of the FTO layers decreases with an increasing degree of nanographene doping. Finally, co-doping with nanographene reduces the resistance of the FTO layers, which can be attributed to an increase in charge carrier mobility.

The aim of this work is to synthesize Nd2O3 nanotubes via chemical deposition followed by thermal treatment. Nd(OH)3 nanotubes were synthesized using Nd(NO3)3 as a precursor and NaOH as a precipitant. After thermal treatment, crystalline Nd2O3 nanotubes were obtained. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) were conducted to study the thermal effects and phase transitions during the synthesis. X-ray phase analysis (XRD) was used to determine the phase composition and crystal structure. In addition, the construction of the crystal lattice structure is carried out using programs.The morphological characteristics of the obtained nanotubes were studied using transmission electron microscopy (TEM). It was found that after thermal treatment at 790 °C, the complete formation of Nd2O3 occurred, with an average diameter of 28±6 nm and a length of approximately 118±10 nm. The results show that thermal treatment led to the transformation of Nd(OH)3 into Nd2O3 nanotubes. These Nd₂O₃ nanotubes, with their unique morphology and size, are of significant interest for use in magnetic materials, catalysis, and optoelectronics, offering potential applications in the development of high-performance permanent magnets and other advanced materials.

The article presents the results of studying the structural and optical characteristics of films based on a mixture and alloy of ZnO, Al2O3, and Dy2O3 with

A composite material of cordierite composition based on the oxides MgO, Al2O3, and SiO2 with a concentration of components, was obtained in a solar furnace

The manufacturing technology and the results of measurements of current–voltage characteristics of ITO/SnO2/CdS/CdTe/Ag thin-film solar cells both wi

The possibility of using a graded-gap crystal as a protective coating of organic solar cells from harmful chemical and other external influences has been s

One intensively developing field in solar engineering is to increase the efficiency of solar photothermal heating installations. The main element of photot

Three ceramic fibrous materials of the Al₂O₃-SiO₂ system with different densities have been treated using concentrated solar radiation. The experiment was performed using technological capabilities of the Big Solar Furnace in the 2 modes: the first mode includes heating up to 1400–1600 °C, holding for 1.5–2 h; the second mode (the fusion mode) includes heating up to 1750–1900 °C until the sample destruction, which is accompanied by fusion. Upon completion of the experiment, the phase composition, microstructure, and compressive strength of the materials were studied. It was shown that the investigated materials retained their fibrous structure under prolonged treatment in the first mode up to temperatures of 1600 °C. The phase composition of the ceramic materials changes during the experiment, and with a decrease in the density, the modification is more pronounced. Treatment of all three materials under study in the fusion mode resulted in the formation of the eutectic component in the form of spherulites. The compressive strength of the materials was found to be slightly reduced after exposure to concentrated solar radiation.

The article considers the influence of a concentrated solar radiation flux at the focus of a Big Solar Furnace (BSF) on the formation of hierarchical struc