Solar photovoltaics (PV) is the main turning point in the shift toward a sustainable energy economy. The International Renewable Energy Agency (IRENA) roadmap proposes that by 2050, electricity production from PV should realize 43% of the total installed power capacity.
Displayed over roof tops and in solar farms, silicon-based solar cells are, so far, one of the most efficient systems in generating electricity from sunlight, but their fabrication can be expensive and energy demanding, aside from being heavy and bulky. The alternative solution of lower-cost thin film solar cells also brings the caveat of being mainly composed of toxic elements such as lead or cadmium, or containing scarce elements such as indium or tellurium.
Perovskite materials are low-cost, solution-processable semiconductors that can absorb and convert solar energy with extraordinarily high efficiencies, making them promising material for use in applications such as photovoltaic solar cells - if the material can be made stable and efficient.
In a recent study published in the journal Dyes and Pigments, researchers from the Republic of Korea developed a novel fluorine-based transparent and colorless ultraviolet (UV) light-harvesting dye for photovoltaic solar cells that can be fitted on to window glasses of urban buildings to meet the increasing energy demand for next decade.
All-polymer blend solar cells are expected to play an important role in the transition to clean energy technologies because they can be easily produced in large-scale flexible sheets. However, their performance has lagged behind that of more traditional silicon alternatives, as well as other organic solar cells.
Perovskite solar cell technology has attracted significant global academic and industrial attentions, with the unprecedented efficiency boosting speed. One of the greatest challenges in the perovskite solar cell research is how to reduce the open circuit voltage loss towards S-Q limit, i.e. eliminating the non-radiative recombination loss.
A team of researchers from the National University of Singapore (NUS) has set a new record in the power conversion efficiency of solar cells made using perovskite and organic materials.
As the world moves toward implementing fully renewable energy and away from fossil fuels, research is ongoing into the optimization of technologies that will help to achieve a net zero carbon global economy.
A group of chemists from Kaunas University of Technology (KTU), Lithuania synthesised materials that were used for constructing a record-breaking perovskite solar module, with an efficiency of 21.4 per cent. This was achieved through the passivation of the active solar cell layer, which increases the efficiency of the cell and significantly improves its stability.
A research team has developed a new artificial photosynthesis device with remarkable stability and longevity as it converts sunlight and carbon dioxide into two promising sources of renewable fuels – ethylene and hydrogen.
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