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A startup in China is set to begin production of ultra-efficient solar panels that are made from the so-called “miracle material” perovskite. The next-generation solar cells will be manufactured at half the cost of traditional silicon cells, with 50 per cent greater efficiency, according to researchers from Nanjing University who made the design breakthrough that made mass production possible. “The raw materials for making perovskite cells are cheap and abundant, making the production costs of these cells just one 20th of traditional solar cells,” Professor Tan Hairen from Nanjing University, told state media. “Moreover, they are easier to produce and can be made in a single factory. Even with other items added, the overall cost of production is only half of that of traditional silicon cells.” Professor Tan has created a startup called Renshine Solar to move forward with commercialisation of the technology, and has already signed a government deal to build a production line in Jiangsu province this summer. The factory is expected to achieve a capacity of 150 megawatts by September, according to the South China Morning Post, with the perovskite solar panels built for use on roofs, walls, or placed on electric cars to improve their range. The perovskite solar cells (PSCs) are capable of retaining over 90 per cent of their initial performance after 600 hours of continuous operation, the team noted, making them suitable for commercial use. The researchers said the next-generation solar cells could also be used in applications ranging from building-integrated panels to space-based electricity generation. “With their lower fabrication cost, low-temperature solution processability, roll-to-roll manufacturing, and wide-bandgap tunability, PSCs have the potential to become the candidate of choice for high-efficiency tandem solar cells,” they wrote in a study detailing the new design that will enter production. “Considering the rapid progress in photovoltaic performance, PSCs have been considered to be ideal candidates for integrating with other systems to realise new innovative technologies.” The study, titled ‘Next-generation applications for integrated perovskite solar cells’, was published in the scientific journal Nature. Its publication comes just one month after a South Korean firm announced that it was aiming to commercialise tandem perovskite solar cells following a $100 million investment to fund a pilot production line next year. Read More Scientists break world record for solar power window material Electric cars could save more than 100,000 lives, study claims Solar trees offer unique solution to charging electric cars College students who cut social media use have less anxiety

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SANTA CLARA, Calif.--(BUSINESS WIRE)--Sep 14, 2023--

Earth has been hit by a blast from a dead star so energetic that scientists cannot explain it. The burst of gamma rays, originating in a dead star known as a pulsar, is the most high energy of its kind ever seen. It was equivalent about ten trillion times the energy of visible light, or 20 tera-electronvolts. Scientists are unable to explain exactly what kind of a scenario could lead a pulsar to emit such intense energy, and the researchers behind the breakthrough say that it “requires a rethinking of how these natural accelerators work”. Scientists hope that they can find yet more powerful energy blasts from pulsars, with a view to better understanding how they are formed. Pulsars are formed when a star dies, exploding in a supernova and leaving behind a tiny, dead star. They are just 20 kilometres across, and spin extremely fast with a powerful magnetic field. “These dead stars are almost entirely made up of neutrons and are incredibly dense: a teaspoon of their material has a mass of more than five billion tonnes, or about 900 times the mass of the Great Pyramid of Giza,” said Emma de Oña Wilhelmi, a scientist at the High Energy Stereoscopic System observatory in Namibia that detected the blast. As pulsars spin, they throw out beams of electromagnetic radiation, throwing it out like a cosmic lighthouse. That means that someone in one spot – like the Earth – will see the radiation pulses flash in a regular rhythm as they spin past. The radiation is thought to be the result of fast electrons that are produced and thrown out by the the pulsar’s magnetosphere, which is made up of plasma and electromagnetic fields that surround the star and spin with it. Scientists can search the radiation for different energy bands within the electromagnetic spectrum, helping them understand it. When scientists previously did that with the Vela pulsar examined in the new study, they found that it was the brightest everseen in the radio band, and the brightest persistent source in the giga-electronvolts. But the new research found that there is a part of the radiation with even more high energy components. “That is about 200 times more energetic than all radiation ever detected before from this object,” said co-author Christo Venter from the North-West University in South Africa. Scientists don’t know exactly how that could happen. 
“This result challenges our previous knowledge of pulsars and requires a rethinking of how these natural accelerators work,” says Arache Djannati-Atai from the Astroparticle & Cosmology (APC) laboratory in France, who led the research. “The traditional scheme according to which particles are accelerated along magnetic field lines within or slightly outside the magnetosphere cannot sufficiently explain our observations. “Perhaps we are witnessing the acceleration of particles through the so-called magnetic reconnection process beyond the light cylinder, which still somehow preserves the rotational pattern? But even this scenario faces difficulties to explain how such extreme radiation is produced.” An article describing the findings, ‘Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts’, is published today in the journal Nature Astronomy. Read More ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say ‘Ring of fire’ solar eclipse this month will be last until 2046 Mystery behind massive star suddenly vanishing decoded New discovery is ‘holy grail’ breakthrough in search for aliens, scientist say