Researchers ohave unveiled an important step in the conversion of light into storable energy: They studied the formation of so-called polarons in zinc oxide. The pseudoparticles travel through the photoactive material until they are converted into electrical or chemical energy at an interface.
In a broad new assessment of the status and prospects of solar photovoltaic technology,...
Computer chips, solar cells and other electronic devices have traditionally been based on...
Research led by a Brown Univ. graduate student has revealed a new way to make light-absorbing perovskite films for use in solar cells. The new method involves a room-temperature solvent bath to create perovskite crystals, rather than the blast of heat used in current crystallization methods.
Caltech scientists, inspired by a chemical process found in leaves, have developed an electrically conductive film that could help pave the way for devices capable of harnessing sunlight to split water into hydrogen fuel. When applied to semiconducting materials such as silicon, the nickel oxide film prevents rust buildup and facilitates an important chemical process in the solar-driven production of fuels such as methane or hydrogen.
The editors of R&D Magazine have announced an eligibility extension for products to be entered into the 2015 R&D 100 Awards. The 2015 R&D 100 Awards will honor products, technologies and services that have been introduced to the market between January 1, 2014 and March 31, 2015.
In a study published in Nature Chemistry, Univ. of Wisconsin-Madison chemistry Prof. Kyoung-Shin Choi presents a new approach to combine solar energy conversion and biomass conversion, two important research areas for renewable energy. For decades, scientists have been working to harness the energy from sunlight to drive chemical reactions to form fuels such as hydrogen, which provide a way to store solar energy for future use.
Scientists have detected for the first time gamma rays emanating from a dwarf galaxy. Such a detection may be the signal of dark matter particles annihilating, a long-sought prediction of many dark matter theories.
Scientists, inspired by a chemical process found in leaves, have developed an electrically conductive film that could help pave the way for devices capable of harnessing sunlight to split water into hydrogen fuel. When applied to semiconducting materials such as silicon, the nickel oxide film prevents rust buildup and facilitates an important chemical process in the solar-driven production of fuels.
With its wings stretched wide to catch the sun's energy, a Swiss-made solar-powered aircraft took off from Abu Dhabi just after daybreak today in a historic first attempt to fly around the world without a drop of fossil fuel.
Green wall technology and semi-transparent solar panels have been combined to generate electrical current from a renewable source of energy both day and night. A prototype “green bus shelter” that could eventually generate enough electricity to light itself, has been built by a collaboration of university researchers and eco-companies.
A research partnership is reporting advances on how to make solar cells stronger, lighter, more flexible and less expensive when compared with the current silicon or germanium technology on the market. The researchers discovered how a blend of conjugated polymers resulted in structural and electronic changes that increased efficiency three-fold, by incorporating graphene in the active layer of the carbon-based materials.
Researchers from institutions including Lund Univ. have taken a step closer to producing solar fuel using artificial photosynthesis. In a new study, they have successfully tracked the electrons' rapid transit through a light-converting molecule. The ultimate aim of the present study is to find a way to make fuel from water using sunlight.
How did fuzzy logic help a group of researchers in Tunisia and Algeria create an ideal photovoltaic system that obeys the supply-and-demand principle and its delicate balance? In the Journal of Renewable & Sustainable Energy, the group describes a new sizing system of a solar array and a battery in a standalone photovoltaic system that is based on fuzzy logic.
Scientists of the Univ. of Luxembourg and of the Japanese electronics company TDK report progress in photovoltaic research: They have improved a component that will enable solar cells to use more energy of the sun and thus create a higher current. The improvement concerns a conductive oxide film which now has more transparency in the infrared region.
Paving the way for lighter and more flexible solar devices, Univ. of California, Los Angeles researchers have identified the key principles for developing high-efficiency polymer solar cells. Today’s commercially produced solar panels use silicon cells to efficiently convert sunlight to energy. But silicon panels are too heavy to be used for energy-producing coatings for buildings and cars, or flexible and portable power supplies.
Researchers have successfully created electricity-generating solar-cells with chemicals found the shells of shrimps and other crustaceans for the first time.
Researchers working with photovoltaic (PV) technologies and production processes have made great strides over the past several years, such that PV systems are now considered a viable and cost-competitive energy alternative to traditional fossil fuel energy sources. The number of installations continues to increase, while panel and system costs continue to decline.
Even at historically low natural gas prices, bioenergy may not be out of the running: It just may need a little help from the sun. A new study from researchers at the Univ. of Minnesota examining the financial viability of solar-heated biomass gasification technologies that produce a natural gas substitute product concludes that combining these renewable resources can make economic sense.
The efficiency of plastic solar cells can be doubled or tripled if an extra solvent is added during the production process, comparable with the role of baking powder in dough mixture. Exactly how this works has been unclear for the last 10 years. But now researchers at TU/e have come up with the answer in a publication in Nature Communications. This new understanding will now enable focused development of plastic solar cells.
Ultra-high-efficiency solar cells similar to those used in space may now be possible on your rooftop thanks to a new microscale solar concentration technology. The falling cost of typical silicon solar cells is making them a smaller and smaller fraction of the overall cost of solar electricity, which also includes "soft" costs like permitting, wiring, installation and maintenance that have remained fixed over time.
The probability of saving money by using solar energy rather than standard grid electricity is 92% for Indiana farm businesses and about 50% for homes, Purdue Univ. energy economists find. While current energy policies play key roles in providing incentives for the use of solar energy in Indiana, businesses have an additional cost-saving option not available to residences: Businesses can deduct their investment in solar from their revenues.
The most popular next-generation solar cells under development may have a problem: The top layer is full of tiny pinholes, researchers at the Okinawa Institute of Science and Technology Graduate Univ. in Japan have found. The majority of high-performance solar cells under development use a combination of materials including perovskite and spiro-MeOTAD.
Engineers are shining new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs. The materials, called perovskites, are particularly good at absorbing visible light, but had never been studied in their purest form: as perfect single crystals.
In Science, Los Alamos National Laboratory researchers reveal a new solution-based hot-casting technique that allows growth of highly efficient and reproducible solar cells from large-area perovskite crystals. The researchers fabricated planar solar cells from pervoskite materials with large crystalline grains that had efficiencies approaching 18%.
One way of storing solar energy is to transform the energy directly into a fuel. Researchers at Uppsala Univ. have shown a reaction which makes the process of creating fuel from solar energy more efficient and less energy demanding. Solar energy is abundant. In one hour, the Earth receives as much energy from the sun as humankind uses in a whole year.
A team of Univ. of Wisconsin-Madison engineers has developed a new tool to help plot the future of solar fuels. In a paper recently published in Energy & Environmental Science, a team outlined a tool to help engineers better gauge the overall yield, efficiency and costs associated with scaling solar-fuel production processes up into large-scale refineries.
A research team has developed a new technique for determining the role that a material’s structure has on the efficiency of organic solar cells, which are candidates for low-cost, next-generation solar power. The researchers have used the technique to determine that materials with a highly organized structure at the nanoscale are not more efficient at creating free electrons than poorly organized structures.
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