A5015275866- Thin-Film Transistor Technologies
- Silicon and Solar Cell Technologies
- Optical Coatings and Gratings
- Silicon Nanostructures and Photoluminescence
- Power Systems Fault Detection
- Chalcogenide Semiconductor Thin Films
- Surface Roughness and Optical Measurements
- Photonic Crystals and Applications
- solar cell performance optimization
- IoT and Edge/Fog Computing
- Semiconductor materials and interfaces
- Smart Grid Security and Resilience
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Scientific Computing and Data Management
- Photonic and Optical Devices
- Gas Sensing Nanomaterials and Sensors
- GaN-based semiconductor devices and materials
- Organic Electronics and Photovoltaics
- Nanowire Synthesis and Applications
- Lightning and Electromagnetic Phenomena
- Near-Field Optical Microscopy
- Advanced Database Systems and Queries
- Advanced optical system design
- Electrical Fault Detection and Protection
University of Ljubljana
2009-2024
Jožef Stefan Institute
2020-2024
B2 (Slovenia)
2023-2024
Traveling wave theory is deployed today to improve the monitoring of transmission lines in electrical power grids. Most traveling methods require prior knowledge propagation characteristic line, which a major source error as value changes during operation line. To localization events on lines, we propose new online method that simultaneously determines frequency-dependent from measurements event. Compared conventional methods, this achieved with one additional measurement, but can still be...
Two-dimensional optical model for simulation of thin-film solar cells with periodical textured interfaces is presented. The based on finite element method and uses triangular discrete elements the structure description. advantages in comparison to other existing models are highlighted. After validation verification developed simulator, simulations a microcrystalline silicon cell sinusoidal grating texture applied carried out. analysis optimization two parameters—period height grooves—are...
Abstract Optical analysis of hydrogenated amorphous silicon (a‐Si:H) solar cells with a periodic texture applied to the interfaces was carried out by two‐dimensional optical simulator. The simulator solves electromagnetic wave equations means finite element method using triangular elements for discretization space. rectangular‐like shape acts as diffraction grating which scatters light into selective angles and thus gives potential significant prolongation paths in thin absorber layers...
In multidimensional numerical simulations of optoelectronic devices the rigorous Maxwell equations are solved in different ways.However, numerically efficient incoherent propagation light inside layers has not been resolved yet.In this paper we present two time-and resource-efficient approaches for optical embedded multilayer structures: (a) phase matching and (b) elimination approach.The simulating thick derived from equations.Both can be applied to any layer structure regardless position...
Knowing the exact location of a short-circuit fault in power distribution system (PDS) is essential for rapid restoration service to customers and has direct impact on operational costs reliability system. In this paper phasor measurement unit (PMU) based method localization classification presented. By introducing concept virtual bus, line determined rather than just bus closest fault. Moreover, after determining location, generic model (GFM) introduced classify type by solving minimization...
We present detailed numerical and experimental investigation of thin-film organic solar cells with a micro-textured light management foil applied on top the front glass substrate. first demonstrate that measurements small-area laboratory are susceptible to significant amount optical losses could lead false interpretation measurement results. Using combined model CROWM calibrated realistic properties films other layers, we identify origins these quantify extent their influence. Further on,...
This paper analyzes the challenges and requirements of establishing energy data ecosystems (EDEs) as data-driven infrastructures that overcome limitations currently fragmented applications. It proposes a new data- knowledge-driven approach for management processing. aims to extend analytics services portfolio various stakeholders achieve two-way flows electricity information optimized generation, distribution, consumption. The is based on semantic technologies create knowledge-based systems...
We investigate the transport mechanism of poly-Sibased carrier-selective junctions using two-dimensional numerical semiconductor device simulations. The detailed model considers charge carrier through pinholes as well tunneling a very thin silicon oxide simultaneously. For verification simulation model, complete temperature dependent transfer length method is modeled and its results are verified with measurements two different samples. By means rigorous simulations, influence pinhole...
The detection and localization of faults plays a huge role in every electric power system, be it transmission network (TN) or distribution (DN), as ensures quick restoration thus enhances the system’s reliability availability. In this paper, framework that supports phasor measurement unit (PMU)-based fault is presented. Besides making process detecting, localizing reporting to control center fully automated, aim was make viable also for DNs, which normally do not have dedicated fiber-optic...
We evaluate the potential of three-dimensional (3D) thin-film silicon solar cells in superstrate configuration deposited on hexagonally ordered arrays ZnO nanocolumns (NCs). These nanostructures are prepared by hydrothermal growth, which is an effective and versatile method to obtain NCs high optical electrical quality at low temperature. For periods P investigated, varied between 0.9 1.4 μm, 3D based hydrogenated amorphous (a-Si:H) exhibit a photocurrent (JSC) boost red wavelength range as...
Finite element method is coupled with Huygens' expansion to determine light intensity distribution of scattered in solar cells and other optoelectronic devices. The rigorous foundation the modelling enables calculation at a chosen distance surface observation material reflection or transmission for given wavelength incident light. scattering anti-reflection properties not limited single textured interface, but can be done above more complex structures several interfaces even particles...
It is widely recognized that in the transition from conventional electrical power systems (EPSs) towards smart grids, voltage frequency will be greatly affected. This why this research extremely valuable, especially since rate-of-change-of-frequency (RoCoF) often considered as a potential means of resolving newly arisen problems, but challenged practice due to noise and its oscillating character. In paper, authors further developed tested one new technologies related under-frequency load...
A back contact of bifacial silicon heterojunction solar cells was investigated and sensitivity design studied by means optical electrical simulations. With 3-D simulations the realistic cell with metal fingers at front simulated. Specular illumination applied Lambertian diffuse side. The advanced multiscale approach to combine 2-D is shown. complete simulated results were verified on fabricated test samples. spacing finger contacts optimized in order improve performance respect albedo bulk...