In the simplest picture, a “self-trapped” polaron forms when an excess electron or hole deforms crystal lattice, creating potential well with bound states. Properties of self-trapped polarons in methylammonium lead iodide perovskite (MAPbI3), which is widely used as solar cell absorber, are great interest, and subject ongoing investigations debates concerning existence large co-presence metasta...

Until now, metal–organic hybrid perovskites (MOHPs) have been known mainly for their remarkable electronic (1–3) and optical properties, generating immense interest worldwide and offering the potential to realize the goal of highly efficient and inexpensive solar power conversion (1, 4, 5) as well as a wide variety of other optoelectronic applications (6, 7). In an exciting development that pro...

This paper proposes an energy management strategy for hybrid power system HPS which is composed of a photovoltaic generator, wind turbine, fuel cell generator and NaS battery storage device, feeding a type house. This strategy is based on Fuzzy Logic Control technique. The hybrid power system is sized to provide the energy demand of the inhabitants of the house and if there is an extra power ge...

We present a techno-economic analysis of solar-driven high-temperature electrolysis systems used for the production of hydrogen and synthesis gas. We consider different strategies for the incorporation of solar energy, distinguished by the use of differing technologies to provide solar power and heat: (i) thermal approaches (system 1) using concentrated solar technologies to provide heat and to...

Modern low earth orbit (LEO) satellites that require multi-mission flexibility are highly likely to be repositioned between different operational orbits. While executing this process the satellite may experience high levels of vibration and environmental hazards, exposing the deployed solar panel to dangerous stress levels, fatigue and space debris, hence it is desirable to retract the solar sa...

Solar direct, indirect and hybrid thermochemical processes are presented for the generation of hydrogen and compared to alternate solar hydrogen processes. A hybrid solar thermal/electrochemical process combines efficient photovoltaics and concentrated excess sub-bandgap heat into highly efficient elevated temperature solar electrolysis of water and generation of H2 fuel utilizing the thermodyn...

Nanowires (NWs) are recently used in several sensor or actuator devices to improve their ordered characteristics. Silicon nanowire (Si NW) is one of the most attractive one-dimensional nanostructures semiconductors because of its unique electrical and optical properties. In this paper, silicon nanowire (Si NW), is synthesized and characterized for application in photovoltaic device. Si NWs are ...