New solar panel design could lead to wider use of renewable energy. Designing solar panels in checkerboard lines increases their ability to absorb light by 125 per cent, a new study says.
Researchers say the breakthrough could lead to the production of thinner, lighter and more flexible solar panels that could be used to power more homes and be used in a wider range of products. The study—led by researchers from the University of York and conducted in partnership with NOVA University of Lisbon (CENIMAT-i3N) - investigated how different surface designs impacted on the absorption of sunlight in solar cells, which put together form solar panels. Scientists found that the checkerboard design improved diffraction, which enhanced the probability of light being absorbed which is then used to create electricity.
The renewable energy sector is constantly looking for new ways to boost the light absorption of solar cells in lightweight materials that can be used in products from roof tiles to boat sails and camping equipment. Dr. Dr. Black silicon UV responses exceed 130% efficiency. "For the first time ever, we have direct experimental evidence that an external quantum efficiency above 100% is possible in a single photodiode without any external antireflection," says Hele Savin, associate professor of Micro and Nanoelectonics at Aalto University in Finland.
The results come just a few years after Savin and colleagues at Aalto University demonstrated almost unity efficiency over the wavelength range 250-950 nm in photodiodes made with black silicon, where the silicon surface is nanostructured and coated to suppress losses. Noticing some curious effects in the UV region, Savin's group extended their study of the devices to focus on this region of the electromagnetic spectrum. UV sensing has multiple applications, including spectroscopy and imaging, flame detection, water purification and biotechnology. While annual market demand for UV photodiodes is expected to increase to 30%, the efficiency of these devices has been limited to 80% at best. All you need is UV. Genombrott för solkraft – kan ersätta fossilt bränsle. The world's oldest Nobel Prize winner, a 96-year-old physicist, says his new invention will give everyone in the world clean, cheap energy.
Brilliant iron molecule could provide cheaper solar energy. For the first time, researchers have succeeded in creating an iron molecule that can function both as a photocatalyst to produce fuel and in solar cells to produce electricity.
The results indicate that the iron molecule could replace the more expensive and rarer metals used today. Some photocatalysts and solar cells are based on a technology that involves molecules containing metals, known as metal complexes. The task of the metal complexes in this context is to absorb solar rays and utilise their energy.
The metals in these molecules pose a major problem, however, as they are rare and expensive metals, such as the noble metals ruthenium, osmium and iridium. "Our results now show that by using advanced molecule design, it is possible to replace the rare metals with iron, which is common in the Earth's crust and therefore cheap," says Chemistry Professor Kenneth Wärnmark of Lund University in Sweden. The study is now published in the journal Science. Scientists Have Created A Molecule That Can Store Solar Energy For 18 Years. Researchers say they have taken a key step forwards in making a molecule that can store solar energy.
Publishing their latest findings in the journal Energy and Environmental Science, the team from Chalmers University of Technology in Sweden first showed off their solar-storing molecule last year. Made from carbon, hydrogen, and nitrogen, the molecule is transformed into an “energy-rich isomer”, one made of the same atoms but bound in a different way, when it is hit by sunlight. The isomer can then be stored as a liquid, with the energy being used later. Much later. Scientists Develop Liquid Fuel That Can Store The Sun's Energy For Up to 18 Years. No matter how abundant or renewable, solar power has a thorn in its side. There is still no cheap and efficient long-term storage for the energy that it generates. The solar industry has been snagged on this branch for a while, but in the past year alone, a series of four papers has ushered in an intriguing new solution.
Scientists in Sweden have developed a specialised fluid, called a solar thermal fuel, that can store energy from the sun for well over a decade. "A solar thermal fuel is like a rechargeable battery, but instead of electricity, you put sunlight in and get heat out, triggered on demand," Jeffrey Grossman, an engineer works with these materials at MIT explained to NBC News.
The fluid is actually a molecule in liquid form that scientists from Chalmers University of Technology, Sweden have been working on improving for over a year. "And when we come to extract the energy and use it, we get a warmth increase which is greater than we dared hope for. " Designad molekyl från Chalmers kan snart värma hus - P4 Göteborg.
7 Great OFF-GRID LIVING Inventions #3. Hannah Bürckstümmer: A printable, flexible, organic solar cell. Transparent Solar Panels Could Turn Any Building Into A Power Generator. See-through solar materials that can be applied to windows represent a massive source of untapped energy and could harvest as much power as bigger, bulkier rooftop solar units, scientists report in the journal Nature Energy.
Led by engineering researchers at Michigan State University, the authors argue that widespread use of such highly transparent solar applications, together with the rooftop units, could nearly meet U.S. electricity demand and drastically reduce the use of fossil fuels. “Highly transparent solar cells represent the wave of the future for new solar applications,” said Richard Lunt, the Johansen Crosby Endowed Associate Professor of Chemical Engineering and Materials Science at MSU. “We analyzed their potential and show that by harvesting only invisible light, these devices can provide a similar electricity-generation potential as rooftop solar while providing additional functionality to enhance the efficiency of buildings, automobiles and mobile electronics.”
How Blockchain Could Give Us a Smarter Energy Grid - MIT Technology Review. On an electricity grid, electrons generated from the sun, wind, or other renewable sources are indistinguishable from those generated by fossil fuels.
To keep track of how much clean energy is produced, governments around the world have created systems based on tradable certificates. Problem is, the way we manage these certificates “sucks,” and it’s holding up investment in renewable power, says Jesse Morris, an energy expert at the Rocky Mountain Institute. A new system based on blockchain, the technology at the heart of Bitcoin and other digital currencies, could fix this, he says.
Futurism - This solar paint will turn your house into a... Elon Musk: Tesla's Solar Roofs Will Be Cheaper Than Regular Roofs & Have "Infinity Warranty" In Brief Last night, Elon Musk announced that Tesla's solar roofs would be on sale starting today.
At the time, he also stated that more information on the panels was forthcoming. Hot Solar Cells: 10 Breakthrough Technologies 2017 - MIT Technology Review. Availability: 10 to 15 years by James Temple Solar panels cover a growing number of rooftops, but even decades after they were first developed, the slabs of silicon remain bulky, expensive, and inefficient.
Fundamental limitations prevent these conventional photovoltaics from absorbing more than a fraction of the energy in sunlight. This video isn't encoded for your device. Hot Solar Cells: 10 Breakthrough Technologies 2017 - MIT Technology Review. NowThis Future - New Solar Technology Turns Any Surface... 10 Breakthrough Technologies 2017: Hot Solar Cells. Non-toxic solvent removes barrier to commercialization of perovskite solar cells. Scientists at Oxford University have developed a solvent system with reduced toxicity that can be used in the manufacture of perovskite solar cells, clearing one of the barriers to the commercialisation of a technology that promises to revolutionise the solar industry.
Perovskites - a family of materials with the crystal structure of calcium titanate - have been described as a 'wonder material' and shown to be almost as efficient as silicon in harnessing solar energy, as well as being significantly cheaper to produce. By combining methylamine and acetonitrile, researchers have developed a clean solvent with a low boiling point and low viscosity that quickly crystallises perovskite films at room temperature and could be used to help coat large solar panels with the material. The results are published in the Royal Society of Chemistry journal Energy & Environmental Science. Virginia Tech flexible solar panel goes where silicon can't. In the very near future, recycling light energy may be easier than recycling any other item in your house.
Led by Shashank Priya, a team of mechanical and materials engineers and chemists at Virginia Tech, including post-doctoral researchers Xiaojia Zheng and Congcong Wu, as well as College of Science chemistry Professor Robert Moore and Assistant Professor Amanda Morris, is producing flexible solar panels that can become part of window shades or wallpaper that will capture light from the sun as well as light from sources inside buildings. Solar modules less than half-a-millimeter thick are being created through a screen-printing process using low-temperature titanium oxide paste as part of a five-layer structure that creates thin, flexible panels similar to tiles in one's bathroom.
"There are several elements that make the technology very appealing," said Priya. "The properties of the panels are such that there are really few limitations in terms of light source," Priya said. Perovskite solar cells hit new world efficiency record. They're flexible, cheap to produce and simple to make - which is why perovskites are the hottest new material in solar cell design. And now, engineers at Australia's University of New South Wales in Sydney have smashed the trendy new compound's world efficiency record.
Speaking at the Asia-Pacific Solar Research Conference in Canberra on Friday 2 December, Anita Ho-Baillie, a Senior Research Fellow at the Australian Centre for Advanced Photovoltaics (ACAP), announced that her team at UNSW has achieved the highest efficiency rating with the largest perovskite solar cells to date. The 12.1% efficiency rating was for a 16 cm2 perovskite solar cell, the largest single perovskite photovoltaic cell certified with the highest energy conversion efficiency, and was independently confirmed by the international testing centre Newport Corp, in Bozeman, Montana. The new cell is at least 10 times bigger than the current certified high-efficiency perovskite solar cells on record. Combining conventional and concentrated solar technology results in efficiency gains. MIT's artificial leaf is ten times more efficient than the real thing. Speaking at the National Meeting of the American Chemical Society in California, MIT professor Daniel Nocera claims to have created an artificial leaf, made from stable and inexpensive materials, which mimics nature's photosynthesis process.
The device is an advanced solar cell, no bigger than a typical playing card, which is left floating in a pool of water. Then, much like a natural leaf, it uses sunlight to split the water into its two core components, oxygen and hydrogen, which are stored in a fuel cell to be used when producing electricity. Nocera's leaf is stable -- operating continuously for at least 45 hours without a drop in activity in preliminary tests -- and made of widely available, inexpensive materials -- like silicon, electronics and chemical catalysts.
Forget solar panels, optical ‘rectenna’ converts light directly to electricity. From Georgia Tech, a news release that we missed when it first came out, but still well worth talking about. First Optical Rectenna – Combined Rectifier and Antenna – Converts Light to DC Current Using nanometer-scale components, researchers have demonstrated the first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC current. This schematic shows the components of the optical rectenna developed at the Georgia Institute of Technology. Elon Musk Announces That SolarCity Will Create a Roof Made Entirely of Solar Panels. In Brief The next project for newly acquired company SolarCity? Solar panels that aren't just added to existing roofs, it's actually THE roof.
Tata Steel to Turn Steel Sheets into Solar Cells Using Spray-on PV Coating. Cientistas australianos criam célula fotovoltaica 34,5% mais eficiente – CicloVivo. Startup cria placas fotovoltaicas que se camuflam às superfícies – CicloVivo. This Hot Water System Can Save You Up to 80% on Energy Bills (Videos) New Printable Solar Panels Are Ready To Hit The Market! IBM Solar Collector Magnifies Sun By 2000X – These Could Provide Power To The Entire Planet.
A team at IBM recently developed what they call a High Concentration Photo Voltaic Thermal (HCPVT) system that is capable of concentrating the power of 2,000 suns, they are even claiming to be able to concentrate energy safely up to 5,000X, that’s huge. The process of trapping the sunlight produces water that can be used to produce filtered drinkable water, or used for other things like air conditioning etc. Scientists envision that the HCPVT system could provide sustainable energy and fresh water to communities all around the world. The Solar Sunflower: Harnessing the power of 5,000 suns. Sebastian Anthony. EWAO Nigerian Man Turns A VW Beetle Into A Solar And Wind Powered Car. This is one of the coolest ideas and to top it off it’s completely reasonable too! Vascular Channels Based On Plant Leaves Allow For Self-Healing In New Solar Cells.
Clean Power. A Seriously Bright Idea That's Giving An Amazing New Purpose To Something We Usually Throw Away. Solar-Powered LED Clothespins Light Up Urban Nights - WebEcoist. This glass sphere might revolutionize solar power on Earth. German architect André Broessel, of Rawlemon, has looked into his crystal ball and seen the future of renewable energy. This solar panel printer can make 33 feet of solar cells per minute. New Material Converts Sunlight to Steam. Spray-On Solar Power Will Likely Soon Change The World.
The Power Cube: It generates, it Internets, and it's back. Design Concepts. Hybrid Material May Help Crush Solar Cell Efficiency Record. German Engineer 3D Prints World’s First Solar Powered Stirling Engine. MIT creates solar cell from grass clippings.