Cietvielu fizikas institūts / Institute of Solid State Physics: Recent submissions
Now showing items 61-80 of 652
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Monolithic Fabrication of Metal-Free On-Paper Self-Charging Power Systems
(Wiley, 2024)Self-charging power systems (SCPSs) are envisioned as promising solutions for emerging electronics to mitigate the increasing global concern about battery waste. However, present SCPSs suffer from large form factors, ... -
Modular photoorigami-based 4D manufacturing of vascular junction elements
(Royal Society of Chemistry, 2024)Four-dimensional (4D) printing, combining three-dimensional (3D) printing with time-dependent stimuli-responsive shape transformation, eliminates the limitations of the conventional 3D printing technique for the fabrication ... -
Mixing Insulating Commodity Polymers with Semiconducting n-type Polymers Enables High-Performance Electrochemical Transistors
(Wiley, 2024)Diluting organic semiconductors with a host insulating polymer is used to increase the electronic mobility in organic electronic devices, such as thin film transistors, while considerably reducing material costs. In contrast ... -
Luminescence Properties of ZrO2: Ti Ceramics Irradiated with Electrons and High-Energy Xe Ions
(MDPI, 2024)Samples of ZrO2 ceramics with different concentrations of impurity titanium ions were synthesized by mixing zirconium and titanium oxide powders in different mass ratios. The X-ray diffraction analysis was used to determine ... -
Fluorene- and fluorenone-based molecules as electron-transporting SAMs for photovoltaic devices
(Royal Society of Chemistry, 2024)New semiconductors containing fluorene or fluorenone central fragments along with phosphonic acid anchoring groups were synthesized and investigated as electron transporting materials for possible application in photovoltaic ... -
Electronic Structure of Mg-, Si-, and Zn-Doped SnO2 Nanowires: Predictions from First Principles
(MDPI, 2024)We investigated the electronic structure of Mg-, Si-, and Zn-doped four-faceted [001]- and [110]-oriented SnO2 nanowires using first-principles calculations based on the linear combination of atomic orbitals (LCAO) method. ... -
The First Application of Laser-Induced Breakdown Spectroscopy: A Fast-Analytical Technique in Targeted Search for Elements in Geological Samples from Deep Boreholes in Latvia
(Sciendo, 2024)Laser-induced breakdown spectroscopy (LIBS) provides a rapid, cost-effective, and extra-sensitive analysis of geological samples to make preliminary conclusions about the presence of valuable elements up to the trace levels ... -
The Effect of 147 MeV 84Kr and 24.5 MeV 14N Ions Irradiation on the Optical Absorption, Luminescence, Raman Spectra and Surface of BaFBr Crystals
(MDPI, 2024)Today, BaFBr crystals activated by europium ions are used as detectors that store absorbed energy in metastable centers. In these materials, the image created by X-ray irradiation remains stable in the dark for long periods ... -
The Annealing Kinetics of Defects in CVD Diamond Irradiated by Xe Ions
(MDPI, 2024)The radiation-induced optical absorption at 1.5–5.5 eV (up to the beginning of fundamental absorption) has been analyzed in CVD diamond disks exposed to 231-MeV 132Xe ions with four fluences from 1012 to 3.8 × 1013 cm−2. ... -
INVESTIGATION OF PHASE SEPARATION AND MORPHOLOGY OF ORGANIC-INORGANIC INTERPENETRATING POLYMER NETWORKS
(Sciendo, 2024)The paper investigates the process of phase separation and morphology of organic-inorganic interpenetrating polymer networks (OIIPNs) based on the cross-linked polyurethane (PU), poly(hydroxyethyl methacrylate) (PHEMA) and ... -
Influence of the Hubbard U Correction on the Electronic Properties and Chemical Bands of the Cubic (Pm(Fromula Presented.)m) Phase of SrTiO3 Using GGA/PBE and LDA/CA-PZ Approximations
(MDPI, 2024)By using DFT simulations employing the GGA/PBE and LDA/CA-PZ approximations, the effects of the Hubbard U correction on the crystal structure, electronic properties, and chemical bands of the cubic phase (Pm (Formula ... -
Influence of swift heavy ions irradiation on optical and luminescence properties of Y3Al5O12 single crystals
(Elsevier B.V, 2024)Optical and luminescence properties of Y3Al5O12 (YAG) single crystals preliminary irradiated by swift heavy ions were studied. Swift heavy Xe ions with fluences ranging from 6·1010 to 2·1012 ions/cm2 were utilized for the ... -
Impact of Europium and Niobium Doping on Hafnium Oxide (HfO2): Comparative Analysis of Sol–Gel and Combustion Synthesis Methods
(MDPI, 2024)This study compares HfO2 ceramics synthesized using sol–gel and combustion methods, emphasizing the impact of the method of synthesis on the resulting properties of the material. The research findings illustrate morphological ... -
Heat-Induced Fragmentation and Adhesive Behaviour of Gold Nanowires for Surface-Enhanced Raman Scattering Substrates
(MDPI, 2024)This study explores a novel approach to surface-enhanced Raman scattering (SERS) substrate fabrication through the heat-induced fragmentation of gold nanowires (Au NWs) and its impact on gold nanoparticle adhesion/static ... -
Evaluating the nexus of funding and scientific output in Kazakhstan
(Business Perspectives, 2024)This study examines the dynamics and effectiveness of investments in Kazakhstan’s research and development (R&D). The primary aim is to assess the efficiency of scientific research activities in Kazakhstan by analyzing the ... -
Enhanced Hydrogen Generation through Low-Temperature Plasma Treatment of Waste Aluminum for Hydrolysis Reaction
(MDPI, 2024)This study investigates the low-temperature hydrogen plasma treatment approach for the improvement of hydrogen generation through waste aluminum (Al) reactions with water and electricity generation via proton-exchange ... -
Energy-Level Interpretation of Carbazole Derivatives in Self-Assembling Monolayer
(MDPI, 2024)Energy-level alignment is a crucial factor in the performance of thin-film devices, such as organic light-emitting diodes and photovoltaics. One way to adjust these energy levels is through chemical modification of the ... -
Effect of Rh Doping on Optical Absorption and Oxygen Evolution Reaction Activity on BaTiO3 (001) Surfaces
(MDPI, 2024)In the present work, we investigate the potential of modified barium titanate (BaTiO3), an inexpensive perovskite oxide derived from earth-abundant precursors, for developing efficient water oxidation electrocatalysts using ... -
Economic Aspects of Mechanical Pre-Treatment’s Role in Precious Metals Recovery from Electronic Waste
(MDPI, 2024)Printed circuit boards (PCBs) make up 3 to 5% of all electronic waste. The metal content of spent PCBs can reach 40%. They usually contain valuable metals, such as Ag, Au, and Pd, as well as other metals such as Cu, Sn, ... -
Graphene-based electrochemical system for tritium enrichment
(IOP Publishing, 2024)In this study, a tritium enrichment system in the water phase has been developed based on the combination of a proton exchange membrane (PEM) electrolysis cell and a fuel cell. As the PEM, NafionTM and laboratory-synthesized ...