Archive for the ‘solar power’ category: Page 11

Dec 9, 2022

Scientists have provided a solution for humans to achieve immortality and come back from the dead

Posted by in categories: biological, life extension, solar power, sustainability

A Dyson Sphere is a megastructure that has not yet been built. Scientists conceive of it as a giant shell that encloses the sun.

Hypothetically, the Dyson Sphere will be lined with mirrors and solar panels that will collect the energy from the sun. This would be an unimaginable amount of energy.

In theory, the Dyson Sphere would be large enough that it could be a habitable place for humans and it would act as an artificial biosphere in the case that Earth’s supplies have dwindled. It would be a way to ensure survival for the human race.

Dec 4, 2022

Researchers use machine learning to accelerate computational study of perovskite alloy materials

Posted by in categories: robotics/AI, solar power, sustainability

Researchers in the CEST group have published a study demonstrating the effectiveness of machine learning methods to identify suitable perovskite solar cell materials. Perovskite solar cells are a novel technology gathering a lot of interest due to their high efficiency and potential for radically lower manufacturing costs when compared to the traditional silicon-based solar cells.

Despite their promising qualities, the commercialization of has been held back by their fast degradation under environmental stresses, such as heat and moisture. They also contain that can negatively impact the environment. The search for new perovskite materials that do not have these problems is ongoing, but the established experimental and computational research methods have not been able to handle the high number of material candidates that need to be tried and tested.

CEST members Jarno Laakso and Patrick Rinke, with from University of Turku and China, developed new machine learning-based methodology for rapidly predicting perovskite properties. This new approach accelerates computations and can be used to study perovskite alloys. These alloy materials contain many candidates for improved solar cell materials, but studying them has been difficult with conventional computational methods.

Dec 3, 2022

Researchers realize perovskite-based phase heterojunction solar cells

Posted by in categories: solar power, sustainability

Over the past few decades, engineers and material scientists have created increasingly advanced and efficient solar technologies. Some of these technologies are based on photovoltaics with a so-called heterojunction structure, which entails the integration of two materials with distinct optoelectronic properties.

Researchers at Technische Universität Dresden have recently realized a different type of , referred to as phase heterojunction (PHJ) solar cells. These cells, introduced in a paper published in Nature Energy, were fabricated using two polymorphs (i.e., structural forms) of the same material, the perovskite CsPbI3, instead of two entirely different semiconductors.

“The realization of a PHJ requires the ability to fabricate two different phases of the same perovskite composition on top of each other,” Yana Vaynzof, lead author of the paper, told TechXplore. “While the fabrication of CsPbI3 perovskite by solution-processing is well established in the literature, we needed to develop a method to deposit a perovskite without dissolving the underlying layer, so we decided to use thermal evaporation for this purpose.”

Nov 29, 2022

Cooling solar farms can make them more powerful

Posted by in categories: solar power, sustainability

You heard that right, it’s time to cool down the solar farms a bit.

It’s a common belief that a solar panel produces more energy on receiving more sunlight but that’s not always true. In fact, a report from the World Economic Forum state that photovoltaic cells on a solar panel (that trap sunlight and convert it into electricity) may start producing less energy if they get overheated.

A new study conducted by a team of researchers from the University of Utah (UU), National Renewable Energy Laboratory (NREL), and Portland State University (PSU), sheds more light on this rarely discussed aspect of solar panels. It mentions that the efficiency of a solar plant goes down by 0.5 percent.

Continue reading “Cooling solar farms can make them more powerful” »

Nov 25, 2022

Terahertz Reveals New Insights on Perovskite Solar Cells

Posted by in categories: solar power, sustainability

Microscopy data suggest that degradation starts from grain boundaries and propagates inwards.

Nov 23, 2022

Glass-like shells of diatoms help turn light into energy in dim conditions

Posted by in categories: computing, solar power, sustainability

A new study has revealed how the glass-like shells of diatoms help these microscopic organisms perform photosynthesis in dim conditions. A better understanding of how these phytoplankton harvest and interact with light could lead to improved solar cells, sensing devices and optical components.

“The and toolkit we developed could pave the way toward mass-manufacturable, sustainable optical devices and more efficient harvesting tools that are based on shells,” said research team member Santiago Bernal from McGill University in Canada. “This could be used for biomimetic devices for sensing, new telecommunications technologies or affordable ways to make clean energy.”

Continue reading “Glass-like shells of diatoms help turn light into energy in dim conditions” »

Nov 22, 2022

The ESA aims to make 24/7 space-based solar energy harvesting a reality

Posted by in categories: solar power, space, sustainability

The Solaris program will study space-based solar power amid rising energy concerns.

The European Space Agency (ESA) is set to approve a three-year study to determine whether sending huge solar farms into space could effectively meet the world’s energy demands, a report from the BBC reveals.

So, if all goes to plan, the technology could one day harvest massive amounts of energy from space — enough to power millions of homes.

Continue reading “The ESA aims to make 24/7 space-based solar energy harvesting a reality” »

Nov 22, 2022

Floating Solar Farms Join Other Novel Over-Water Ways to Get to Net Zero

Posted by in categories: food, solar power, sustainability

Solar farms moving from the land to the water.

Large solar arrays on land take up land that can be used to grow food. Solar arrays over water provide significant advantages.

Nov 21, 2022

A Portuguese company’s innovative floating solar panels stalk the Sun’s movements

Posted by in categories: solar power, sustainability

Currently floating on a lake in the Netherlands, the solar island comprises 180 movable solar panels that provide an increase in energy production by up to 40 percent.

A Portuguese company’s sustainable solution is following the Sun, almost like a stalker, in a bid to get the most out of its energy.


Continue reading “A Portuguese company’s innovative floating solar panels stalk the Sun’s movements” »

Nov 21, 2022

New technique accurately measures how 2D materials expand when heated

Posted by in categories: computing, particle physics, solar power, sustainability

Two-dimensional materials, which consist of just a single layer of atoms, can be packed together more densely than conventional materials, so they could be used to make transistors, solar cells, LEDs, and other devices that run faster and perform better.

One issue holding back these next-generation electronics is the heat they generate when in use. Conventional electronics typically reach about 80 degrees Celsius, but the in 2D devices are packed so densely in such a small area that the devices can become twice as hot. This can damage the device.

This problem is compounded by the fact that scientists don’t have a good understanding of how 2D materials expand when temperatures rise. Because the materials are so thin and optically transparent, their thermal expansion coefficient (TEC)—the tendency for the material to expand when temperatures increase—is nearly impossible to measure using standard approaches.

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