Browsing Moksliniai ir apžvalginiai straipsniai / Research and Review Articles by VGTU prioritized fields "AE0404 - Atsinaujinanti energija / Renewable energy"
Now showing items 1-17 of 17
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Algae-based CO2 capture in cold and humid climate countries
(Bioenergy: prospects, applications and future directions / editor: Joanne Castillo, 2018)Worldwide business sector for biodiesel is balanced for unstable development in the following ten years. Advanced and mature technologies for alternative fuels' production must be brought to the energy market getting ... -
Changes in building energy certification (Lithuania)-biomass rehabilitation
(Advancements in civil engineering & technology, 2022)In the last few years, the areas of energy regulation, certification and implementation of solutions in Lithuania (LT) have undergone significant, if not drastic, changes in the field of energy regulation, certification ... -
Competition between direct detection mechanisms in planar bow-tie microwave diodes on the base of InAlAs/InGaAs/InAlAs heterostructures
(Sensors: Special issue: Feature papers in physical sensors 2022, 2023)The application of the unique properties of terahertz radiation is increasingly needed in sensors, especially in those operating at room temperature without an external bias voltage. Bow-tie microwave diodes on the base ... -
Detection of 9.5 μm CO2 laser pulses in indium doped PbTe p-n junction
(Physica B: Physics of Condensed Matter, 2021)A unique feature of the PbTe semiconductor is the growth of its forbidden energy gap with increasing temperature. This allows saving diode-typical characteristics at temperatures up to 180 K. PbTe p-n diodes were fabricated ... -
Efficient decision making for sustainable energy using single-valued neutrosophic prioritized interactive aggregation operators
(Mathematics: Special issue: Dynamics under uncertainty: Modeling simulation and complexity II, 2023)To reduce greenhouse gas emissions, conserve the environment, and reduce dependency on fossil fuels, the transition from fossil energy to renewable energy is deemed essential. Several companies around the globe, especially ... -
Flyback mikroinverterio, sudaryto iš dviejų raktų, modelio Matlab Simulink aplinkoje sudarymas ir tyrimas
(Mokslas – Lietuvos ateitis: Elektronika ir elektros inžinerija - 2018 = Science – future of Lithuania: Electronics and electrical engineering - 2018, 2018)Darbe pateikti siūlomo flyback tipo mikroinverterio, sudaryto iš dviejų raktų, modeliavimo rezultatai Matlab Simulink aplinkoje. Tyrimo tikslas – įvertinti siūlomo flyback mikroinverterio modelio veikimą virtualioje Matlab ... -
Hot carrier photocurrent through MOS structure
(Applied sciences, 2021)Flow of photocurrent through the metal-oxide-semiconductor structure induced by the pulsed infrared CO2 laser is investigated experimentally. In the case of a perfect insulator, the photocurrent has a photocapacitive ... -
Indirect measurement of electron energy relaxation time at room temperature in two-dimensional heterostructured semiconductors
(Materials, 2022)Hot carriers are a critical issue in modern photovoltaics and miniaturized electronics. We present a study of hot electron energy relaxation in different two-dimensional electron gas (2DEG) structures and compare the ... -
Pd-supported Co3O4/C catalysts as promising electrocatalytic materials for oxygen reduction reaction
(Catalysts, 2022)This paper describes the activity of PdCo3O4/C obtained by wet impregnation towards the oxygen reduction reaction (ORR). For this purpose, the Co3O4/C substrate was synthesized using the microwave irradiation heating method ... -
Pre-themalizational effect of hot carriers on photovoltage formation in a solar cell
(Ukrainian journal of physical optics, 2022)Although the power-conversion efficiency of single-junction solar cells achieved in practice is slowly increasing in the recent years, it still remains well below the theoretical Shockley–Queisser limit. We analyze in this ... -
Quality assessment of biogas-producing macroalgae from Azov Sea and Šventoji River
(Sustainability: Special issue: Efficient use and recovery of resources for the purpose of circular economy and sustainability, 2023)The decline of fossil fuels, the increase in greenhouse gases, and the global demand for energy are driving the search for alternative energy sources. Anaerobic digestion is a promising technology because it can convert ... -
Saulės elektrinės ir jų vystymosi perspektyvos
(Inžinerinės ir edukacinės technologijos = Engineering and educational technologies, 2018)Kiekvieną dieną saulė pagamina didžiulius kiekius energijos. Tai pats galingiausias energijos šaltinis žemėje. Paprasčiausias būdas paversti saulės energiją į elektros energiją yra saulės baterijų naudojimas. Nuolat augant ... -
Saw-tooth type piezoelectric multi-modal energy harvester
(Sensors and actuators A: Physical, 2019)The paper presents results of numerical and experimental investigations of a new design piezoelectric energy harvester based on a saw-tooth type cantilever array. The proposed energy harvester has multi-modal operation ... -
Sensitive planar microwave diode on the base of ternary AlxGa1-xAs semiconductor compound
(Sensors, 2021)The article presents results of experimental studies of dc and high frequency electrical character-istics of planar microwave diodes fabricated on the base of n-AlxGa1-xAs layer (x = 0, 0.15 or 0.3) epitaxially grown on ... -
Solar energy as a tool of renovating soviet-type multi apartment buildings
(Solar energy, 2020)The paper analyses the energy and technical possibilities of installing systems that use renewable energy sources (solar energy) to renovate soviet type apartment buildings. The aim of the analysis is to study the possibilities ... -
Suppression of hot carriers by nanoporous silicon for improved operation of a solar cell
(Ukrainian journal of physical optics, 2020)The surface of a silicon solar cell is modified to improve its photovoltaic characteristics. Nanostructured porous silicon layer is formed on a front n+ -type surface of a p–n junction by means of electrochemical etching ... -
Two-color infrared sensor on the PbTe: In p-n junction
(Sensors, 2021)A lead telluride sensor was fabricated on the base of a p-n PbTe junction created on a PbTe single crystal grown by the Czochralski technique, followed by the diffusion of an indium donor impurity into a crystal. The ...