Hot carrier solar cells, a concept introduced several decades ago, have long been seen as a potential breakthrough in solar energy technology. These cells could surpass the Shockley–Queisser efficiency limit, which is a theoretical maximum efficiency for single-junction solar cells. Despite their promise, practical implementation has faced significant challenges, particularly in managing the rapid extraction of hot electrons across material interfaces.
Rio Tinto has ambitious goals when it comes to sustainability. According to the company’s website, it aims to transition all its facilities and operations to net-zero greenhouse gas emissions by 2050. To achieve this, the company is working with governments to scale up renewable energy resources where it works. For example, Rio Tinto invested more than $500 million to partner with the Canadian government to decarbonize an iron and titanium mine in Quebec.
Mining companies like Rio Tinto provide necessary metals and minerals for global clients. The company’s products and resources are used all over the world in items that people use in their daily lives. Unfortunately, mining with diesel fuel produces carbon dioxide. Rio Tinto is exploring the effectiveness of renewable energy sources in its operations to try and reduce the negative impacts mining has on the Earth.
The Diavik diamond mine features a historic solar power plant that can produce up to 4.2GW hours of electricity for its operations. The solar panels on-site use both the light of the sun as well as light reflected off of snow to generate electricity.
52 billion solar panels could soon be covering the American highway network. Researchers from the Chinese Academy of Sciences, Tsinghua University, Chinese Academy of Geosciences, and Columbia University have proposed a historic initiative which could see major global highways covered with solar panels.
The researchers publication “Roofing Highways With Solar Panels Substantially Reduces Carbon Emissions and Traffic Losses” in Earth’s Future advocate for the deployment of solar technology across the global highway network which spans up to 3.2 million kilometers.
In doing so, the researchers estimate that up to 17,578 TWh of electricity could be generated annually. This figure is equivalent to more than a staggering 60% of 2023’s energy consumption. This could offset up to 28% of global carbon emissions and reduce road accident incidences up to 11%.
A discovery six years ago took the condensed-matter physics world by storm: Ultra-thin carbon stacked in two slightly askew layers became a superconductor, and changing the twist angle between layers could toggle their electrical properties. The landmark 2018 paper describing “magic-angle graphene superlattices” launched a new field called “twistronics,” and the first author was then-MIT graduate student and recent Harvard Junior Fellow Yuan Cao.
Together with Harvard physicists Amir Yacoby, Eric Mazur, and others, Cao and colleagues have built on that foundational work, smoothing a path for more twistronics science by inventing an easier way to twist and study many types of materials.
A new paper in Nature describes the team’s fingernail-sized machine that can twist thin materials at will, replacing the need to fabricate twisted devices one by one. Thin, 2D materials with properties that can be studied and manipulated easily have immense implications for higher-performance transistors, optical devices such as solar cells, and quantum computers, among other things.
“We have demonstrated that high-performance and environmentally sustainable lithium-ion batteries are not only possible, but also within reach.” Scientists convert waste from solar panels into advanced battery technology — and it could solve major issues with clean energy first appeared on The Cool Down.
🚀 LumenOrbit (YC S24) is building a network of megawatt-scale data centers in space, scalable to gigawatt capacity.
Why we should train AI in space.
To keep pace with AI development, vast new data centers and many gigawatts of new energy projects to power them will need to be deployed around the…
Experts have created a ‘miracle material’ that will be the end of conventional solar panels: 60 times more energy and unexpected performance.
Researchers at SLAC have made groundbreaking strides in understanding the photoelectric effect, initially described by Einstein.
They’ve developed a technique using attosecond X-ray pulses to measure electron-emission delays, revealing discrepancies in existing theories by showing larger-than-expected delays. Their method provides a new tool to study electron-electron interactions, which are fundamental to many technologies, including semiconductors and solar cells.
New Photoelectric Effect Insights
Chinese solar PV giant Trina Solar has successfully begun commercial operations at a new agri-voltaic solar project in Japan that combines solar modules with a yam crop that thrives in the shade.
The agrivoltaic project is only small – just 2.4 MW – and is located in the city of Fukuchiyama in Japan’s northern Kyoto Prefecture, but is a demonstration of the new way of thinking about the use of solar projects and existing farmland.
The Fukuchiyama project is paired with the cultivation of the Japanese yam, also known as ebi-imo, a crop native to the region which thrives in shade.
