Archive for the ‘solar power’ category: Page 4

May 9, 2024

Researchers create 2D all-organic perovskites and demonstrate potential use in 2D electronics

Posted by in categories: chemistry, solar power, sustainability

Perovskites are among the most researched topics in materials science. Recently, a research team led by Prof. LOH Kian Ping, Chair Professor of Materials Physics and Chemistry and Global STEM Professor of the Department of Applied Physics of The Hong Kong Polytechnic University (PolyU), Dr Kathy LENG, Assistant Professor of the same department, together with Dr Hwa Seob CHOI, Postdoctoral Research Fellow and the first author of the research paper, has solved an age-old challenge to synthesise all-organic two-dimensional perovskites, extending the field into the exciting realm of materials. This breakthrough opens up a new field of 2D all-organic perovskites, which holds promise for both fundamental science and potential applications.

This research was published in the journal Science (“Molecularly thin, two-dimensional all-organic perovskites”).

Perovskites are named after their structural resemblance to the mineral calcium titanate perovskite, and are well known for their fascinating properties that can be applied in wide-ranging fields such as solar cells, lighting and catalysis. With a fundamental chemical formula of ABX 3, perovskites possess the ability to be finely tuned by adjusting the A and B cations as well as the X anion, paving the way for the development of high-performance materials.

May 4, 2024

Space-based solar power is getting serious—can it solve Earth’s energy woes?

Posted by in categories: solar power, space, sustainability

Learn more on SunDay:

Better technology and falling launch costs revive interest in a science-fiction technology.

May 3, 2024

Empa researcher on perovskite as the next generation of solar tech

Posted by in categories: solar power, sustainability

Perovskite, a revolutionary material, promises to surpass silicon efficiency and usher in a new era of affordable, sustainable solar energy.

Apr 29, 2024

Energy Scientists Have Unraveled the Mystery of Gold’s Glow

Posted by in categories: chemistry, mapping, nanotechnology, quantum physics, solar power, sustainability

Researchers at EPFL have created the first detailed model explaining the quantum-mechanical effects that cause photoluminescence in thin gold films, a breakthrough that could advance the development of solar fuels and batteries.

Luminescence, the process where substances emit photons when exposed to light, has long been observed in semiconductor materials like silicon. This phenomenon involves electrons at the nanoscale absorbing light and subsequently re-emitting it. Such behavior provides researchers with valuable insights into the properties of semiconductors, making them useful tools for probing electronic processes, such as those in solar cells.

In 1969, scientists discovered that all metals luminesce to some degree, but the intervening years failed to yield a clear understanding of how this occurs. Renewed interest in this light emission, driven by nanoscale temperature mapping and photochemistry applications, has reignited the debate surrounding its origins. But the answer was still unclear – until now.

Apr 26, 2024

Researchers outline path forward for tandem solar cells

Posted by in categories: solar power, sustainability

As the old saying goes, two heads are better than one. The same is true when it comes to solar cells working in tandem. Researchers at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) have prepared a roadmap on how to move tandem solar cells—particularly those that mesh different photovoltaic technologies—closer to commercialization.

As the researchers pointed out in an article in the journal Joule, considerably more solar power must be added globally beyond the currently installed 1 terawatt of capacity. Because of the growing population and increased electrification of all energy sectors, experts are predicting the world will need 75 terawatts of photovoltaics (PV) by 2050.

The vast majority of solar modules in use today rely on a single junction, which is able to absorb only a fraction of the solar spectrum and thus are limited to how efficient they can be. Tandem solar cells, which consist of two or more junctions, hold the potential to reach much higher efficiencies. Because tandems are stacked on top of each other, the total area a module requires decreases—in turn, raising the efficiency and potentially lowering the total system cost.

Apr 23, 2024

Japan’s mini space-based solar power plant to beam energy home by 2025

Posted by in categories: solar power, space, sustainability

The mission is part of a project called OHISAMA (Japanese for Sun), which is on track for launch in 2025.

Japan is gearing up to test its space-based solar power station next year.

An adviser from Japan Space Systems, Koichi Ijichi, shared details about the plans of the mini space-based solar power plant.

Apr 23, 2024

California Now Has So Much Solar Power That Electricity Prices Are Going Negative During the Day

Posted by in categories: solar power, sustainability

It’s the “duck curve” problem. Solar power is providing huge amounts of energy during the day, creating a headache for grid operators.

Apr 23, 2024

Japanese satellite will beam solar power to Earth in 2025

Posted by in categories: solar power, space, sustainability

Japan’s upcoming space-based solar power demonstration will beam power to Earth next year.

Apr 22, 2024

Solar cells 20x thinner than hair power long-duration drone flights

Posted by in categories: drones, solar power, sustainability

Cutting-edge research introduces ultra-light, flexible solar cells for sustainable, long-term energy independence.

Apr 22, 2024

City to install massive underground thermal energy storage facility: ‘The world is undergoing a huge energy transition’

Posted by in categories: solar power, sustainability

Now that we can generate clean, renewable energy from the wind and sun, one of the most pressing questions facing the clean energy transition is how to effectively store that energy for future use. For one city in Finland, the answer is a giant underground cavern.

Vantaan Energia has announced that it will construct a massive underground seasonal thermal energy storage facility for the city of Vantaa, the country’s fourth-most-populous municipality. The facility will be twice the size of Madison Square Garden, New Atlas reported.

Continue reading “City to install massive underground thermal energy storage facility: ‘The world is undergoing a huge energy transition’” »

Page 4 of 13712345678Last