A5101684625- Perovskite Materials and Applications
- Conducting polymers and applications
- Organic Electronics and Photovoltaics
- Organic Light-Emitting Diodes Research
- ZnO doping and properties
- Graphene research and applications
- Mathematics Education and Programs
- Gas Sensing Nanomaterials and Sensors
- Luminescence Properties of Advanced Materials
- Quantum Dots Synthesis And Properties
- Educational Games and Gamification
- Thermal Radiation and Cooling Technologies
- Online and Blended Learning
- International Science and Diplomacy
- Carbon Nanotubes in Composites
- Teaching and Learning Programming
- Experimental Learning in Engineering
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- 2D Materials and Applications
- Electromagnetic Compatibility and Measurements
- Thin-Film Transistor Technologies
- Problem and Project Based Learning
- Advanced Semiconductor Detectors and Materials
- Forecasting Techniques and Applications
Mediterranean University
2022-2025
Hellenic Mediterranean University
2016-2024
University of Macedonia
2018-2023
Universidade Europeia
2023
University of Maribor
2022
University of Leeds
2022
Weizmann Institute of Science
2022
University Hospital of Heraklion
2017
Hybrid lead halide spin coated perovskite films have been successfully tested as portable, flexible, operated at room temperature, self-powered, and ultrasensitive ozone sensing elements. The electrical resistance of the hybrid mixed (CH3NH3PbI3-xClx) element, was immediately decreased when exposed to an (O3) environment manage recover its pristine conductivity values within few seconds after complete removal gas. measurements showed different response times gas concentrations, good...
Literature review of metal and rare-earth-element nanoparticles doped in the device building blocks mesoscopic planar perovskite solar cells.
This laboratory experiment is designed to train undergraduate students in the fundamental steps followed engineering solution-processed organic solar cells and offer insight on operating principles of said device. Bulk heterojunction (BHJ) represent a photovoltaic architecture which has attracted lot attention due its promising properties; moreover, this architecture, low cost potential, continuously being investigated improved. paper intended as useful step-by-step guide for researchers...
Ultrathin, solution-processed emerging solar cells with high power-per-weight (PPW) outputs demonstrate unique potential for applications where low weight, power output, and flexibility are indispensable. The following perspective explores the literature of PVs highlights maximum reported PPW values perovskite (PSCs) 29.4 W/g, organic (OSCs) 32.07 quantum dot 15.02 respectively. record OSCs PSCs approximately one order magnitude higher compared to their inorganic ultrathin counterparts...
Abstract In this work we study in-depth the antireflection and filtering properties of ultrathin-metal-film-based transparent electrodes (MTEs) integrated in thin-film solar cells. Based on numerical optimization MTE design experimental characterization perovskite cell (PSC) samples, show that reflection visible spectrum can be strongly suppressed, contrast to common belief (due compact metal layer). The optical loss optimized electrode (~ 2.9%), composed a low-resistivity an insulator, is...
Abstract Hydrogen (H 2 ) is a well-known reduction gas and for safety reasons very important to be detected. The most common systems employed along its detection are metal oxide-based elements. However, the latter demand complex expensive manufacturing techniques, while they also need high temperatures or UV light operate effectively. In this work, we first report solution processed hybrid mixed halide spin coated perovskite films (CH 3 NH PbI 3− x Cl that have been successfully applied as...
The everchanging higher education landscape dictates the need for innovative, engaging, and efficient teaching methods along with promoting soft skills among students. Scrum’s framework effective group work its methodology tools is a perfect fit to this end since it has been previously applied in enhancing collaborative learning developing such as communication, teamwork, problem solving. This paper describes how Scrum was used remotely small portion of students enrolled an online Physics II...
The growing use of technology for mathematics in higher education opens new pedagogical and technological challenges teachers. objective this study was to analyze the teaching approaches technology-related competencies 29 teachers (15 females 14 males) from nine European countries. After conducting semi-structured interviews, Approaches Teaching Inventory (ATI-16) Technological Pedagogical Content Knowledge (TPACK) framework survey were applied. results show large individual variations...
Hydroiodic acid (HI)-treated reduced graphene oxide (rGO) ink/conductive polymeric composites are considered as promising cold cathodes in terms of high geometrical aspect ratio and low field emission (FE) threshold devices. In this study, four simple, cost-effective, solution-processed approaches for rGO-based effect emitters were developed, optimized, compared; rGO layers coated on (a) n+ doped Si substrate, (b) n+-Si/P3HT:rGO, (c) n+-Si/PCDTBT:rGO, (d) n+-Si/PCDTBT:PC71BM:rGO composites,...
Textile patch antennas of simple rectangular, triangular, and circular shape, for operation in the 2.4–2.5 GHz free industrial, scientific, medical (ISM) band, are designed this paper. Thirty-six antenna prototypes have been fabricated by engaging different geometries, materials, substrate materials. Each is after optimization a genetic algorithm, which evolves initial dimensions feeding position prototype’s microstrip counterpart to final optimal geometrical characteristics wearable...
A novel solution-processed, graphene-based material was synthesized by treating graphene oxide (GO) with 2,5,7-trinitro-9-oxo-fluorenone-4-carboxylic acid (TNF-COOH) moieties, via simple synthetic routes. The yielded molecule N-[(carbamoyl-GO)ethyl]-N'-[(carbamoyl)-(2,5,7-trinitro-9-oxo-fluorene)] (GO-TNF) thoroughly characterized and it shown that presents favorable highest occupied molecular orbital (HOMO) lowest unoccupied (LUMO) energy levels to function as a bridge component between the...
Ion and metal diffusion in halide perovskites, charge-transporting layers, electrodes are detrimental to the performance stability of perovskite-based photovoltaic devices. As a result, there is an intense...
Photovoltaics is amongst the most important technologies for renewable energy sources, and plays a key role in development of society with smaller environmental footprint. Key parameters solar cells are their conversion efficiency, operating lifetime, cost obtained from photovoltaic system compared to other sources. The optimization these aspects involves exploitation new materials novel cell concepts designs. Both theoretical modeling characterization such devices require comprehensive view...