Archive for the ‘solar power’ category: Page 13

Jul 26, 2023

New study reveals spin in quantum dots’ carrier multiplication

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

A new approach to developing semiconductor materials at tiny scales could help boost applications that rely on converting light to energy. A Los Alamos-led research team incorporated magnetic dopants into specially engineered colloidal quantum dots—nanoscale-size semiconductor crystals—and was able to achieve effects that may power solar cell technology, photo detectors and applications that depend on light to drive chemical reactions.

“In quantum dots comprising a lead-selenide core and a cadmium-selenide shell, manganese ions act as tiny magnets whose magnetic spins strongly interact with both the core and the shell of the quantum dot,” said Victor Klimov, leader of the Los Alamos nanotechnology team and the project’s principal investigator. “In the course of these interactions, energy can be transferred to and from the manganese ion by flipping its spin—a process commonly termed spin exchange.”

In spin-exchange multiplication, a single absorbed photon generates not one but two , also known as excitons, which occur as a result of spin-flip relaxation of an excited manganese ion.

Jul 23, 2023

Researchers grow precise arrays of nanoLEDs

Posted by in categories: computing, nanotechnology, solar power, sustainability

Halide perovskites are a family of materials that have attracted attention for their superior optoelectronic properties and potential applications in devices such as high-performance solar cells, light-emitting diodes, and lasers.

Caption :

A new MIT platform enables researchers to “grow” halide perovskite nanocrystals with precise control over the location and size of each individual crystal, integrating them into nanoscale light-emitting diodes. Pictured is a rendering of a nanocrystal array emitting light.

Jul 22, 2023

Bifacial solar cells could produce more energy at lower costs

Posted by in categories: chemistry, nanotechnology, solar power, sustainability

According to scientists at the U.S. Department of Energy’s National Renewable Energy Laboratory (NREL), a bifacial perovskite solar cell holds the potential to produce higher energy yields at lower overall costs.

The bifacial solar cell captures direct sunlight on the front and reflected sunlight on the back. As a result, this type of device can outperform its monofacial counterparts, according to the new study.

“This perovskite cell can operate very effectively from either side,” said Kai Zhu, a senior scientist in the Chemistry and Nanoscience Center at NREL and lead author of a new paper.

Jul 22, 2023

Harvesting large-scale raindrop energy using solar panel technology

Posted by in categories: solar power, sustainability

Paving a potential industrial approach for effectively harvesting raindrop energy at a large scale.

Jul 22, 2023

MIT Scientists Turn Seawater to Drinking Water With the Push of a Button

Posted by in categories: mobile phones, particle physics, solar power, sustainability

Now that’s something mach can use.

MIT researchers have recently developed a portable desalination unit that can remove particles and salts to turn seawater into drinking water.

Continue reading “MIT Scientists Turn Seawater to Drinking Water With the Push of a Button” »

Jul 21, 2023

Researchers make progress toward a new environmentally friendly nanomaterial that could revolutionize electronic devices

Posted by in categories: chemistry, nanotechnology, solar power, sustainability

A team of researchers from the Instituto de Carboquímica of the Spanish National Research Council (CSIC) has made a remarkable step forward in the development of efficient and sustainable electronic devices. They have found a special combination of two extraordinary nanomaterials that successfully results in a new hybrid product capable of turning light into electricity, and vice-versa, faster than conventional materials.

The research is published in the journal Chemistry of Materials.

This consists of a one-dimensional conductive polymer called polythiophene, ingeniously integrated with a two-dimensional derivative of graphene known as graphene oxide. The unique features exhibited by this hybrid material hold incredible promise for improving the efficiency of optoelectronic devices, such as smart devices screens, and solar panels, among others.

Jul 21, 2023

New device turns sunlight into hydrogen with record efficiency

Posted by in categories: solar power, sustainability

As we strive towards a more sustainable future, it’s becoming increasingly important to find innovative ways to decarbonize industry and facilitate clean energy storage.

One promising approach is the manufacture of valuable products and fuels using available, low-cost feedstocks like water, carbon dioxide, nitrogen, and solar energy. By harnessing the power of these abundant resources, we can reduce our reliance on fossil fuels and move towards a cleaner, more sustainable energy future.

In a similar effort, Rice University engineers have developed a device that can turn sunlight into hydrogen with record-breaking efficiency – a significant step forward for clean energy. The device combines next-generation halide perovskite semiconductors with electrocatalysts in a single, durable, cost-effective, and scalable device.

Jul 20, 2023

‘World’s largest sundial’ could generate nearly 400,000 kWh of electricity every year

Posted by in categories: solar power, sustainability

The project, called the Arch of Time, will stand 100 feet tall and generate enough solar power every year to offset 40 Texans’ home energy use.

Berlin architect Riccardo Mariano has designed an innovative new project for the city of Houston, Texas, that will generate nearly 400,000 kWh of electricity every year while acting as a public sundial.

The project, named the Arco del Tiempo (Arch of Time), will be a 100-foot-tall triumphal archway that will serve as the gateway to the city’s East End, part of the Second Ward district for the city. It will have a roof covered in photovoltaic modules to produce electricity as well.

Jul 20, 2023

Solar space butterfly could power lunar outposts around the clock

Posted by in categories: nuclear energy, solar power, space, sustainability

According to a study by Astrostrom for ESA, future Moon bases could be powered by a giant space butterfly called the Greater Earth Lunar Power Station (GEO-LPS) covered with solar panels made from lunar materials beaming microwaves to the surface.

One of the major design concerns in setting up a lunar base is finding a reliable means of powering it. Solar power might seem the obvious answer, but with lunar nights lasting 14 Earth days, it isn’t a practical option. However, though the most promising alternative is currently a small nuclear reactor, solar may not be out of the running.

The idea of solar power plants in space has been around for well over half a century. On Earth, solar panels are limited by night time, atmospheric haze, and bad weather, making them only capable of intermittent power generation with limited efficiency. On the other hand, in space, where there is no night and no atmosphere, solar power becomes very attractive.

Jul 19, 2023

US startup claims ‘commercial scale’ geothermal energy production after 30-day demo

Posted by in categories: computing, solar power, sustainability

The energy generation site will be connected to the grid and power Google’s data centers in Nevada.

Houston-based US startup Fervo Energy has claimed that it has achieved “commercial scale” geothermal energy production from its Project Red demonstration site in northern Nevada. The site recently completed a 30-day well test, a standard for geothermal energy installations, a company press release said.

Geothermal energy is one of the sources of renewable power being explored as the world moves away from fossil fuels. Unlike wind and solar power plants, geothermal energy can be sourced around the clock and on demand to cater to increased energy needs.

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