?-SnWO4 is a promising metal oxide photoanode material for direct photoelectrochemical water splitting. With band gap of 1.9 eV, it ideally matches the requirements as top absorber in tandem device theoretically capable achieving solar-to-hydrogen (STH) efficiencies above 20%. It suffers from instability, but NiOx protection layers have been shown to help overcome this limitation. At same time,...

new method of surface energy modification and engineering of the hydroxyapatite (HAp) nanoceramics coatings is presented. It is performed by lectron-induced surface energy modification resulting in deep and tunable variation of its wettability state. It is found from electronic traps state pectroscopy studies of the HAp ceramics implemented by various methods such as photoluminescence and surfa...

Electrocatalysts improve the efficiency of light-absorbing semiconductor photoanodes driving the oxygen evolution reaction, but the precise function(s) of the electrocatalysts remains unclear. We directly measure, for the first time, the interface carrier transport properties of a prototypical visible-light-absorbing semiconductor, α-Fe2O3, in contact with one of the fastest known water oxidati...

We investigate the dependence of the photovoltaic performance of dye-sensitized solar cells on the cations with different charge densities, such as lithium (Li(+)), sodium (Na(+)), potassium (K(+)), and dimethylimidazolium (DMI(+)). The efficiencies of light harvesting, electron injection and charge collection were evaluated to clarify the influence of cation selection on photocurrent generatio...

Abstract Energy is an essential component of meeting social needs and economic growth. The international energy agency (IEA) estimates that a 53% increase in global consumption expected by 2030. Pollution environment, climate change, the growing demand worldwide require serious attention. Moreover, fossil fuels will significantly contribute to greenhouse gas emissions from combustion exacerbate...

In earlier studies, we have shown theoretically and experimentally that magnetic fields (MFs) negative impact on silicon PV module (photovoltaic module). A noticeable decline in photocurrent with a slight increase photovoltage was observed. Also, how those affected other key module’s parameters also studied. These studies concluded an the magnitude of MF resulted decrease efficiency module. The...

A hybrid structure, which integrates the nanostructured silicon with a bio-active silicate, is fabricated using the method of MHz sonication in the cryogenic environment. Optical, atomic force, and scanning electron microscopy techniques as well as energy dispersive X-ray spectroscopy were used for the investigation of the morphology and chemical compound of the structured surface. Micro-Raman ...