Solar Energy News -- ScienceDaily
Gas vs. electric? Fuel choice affects efforts to achieve low-energy and low-impact homes
Thu, 23 May 2019 13:02:14 EDT
If you want to make your home as energy-efficient and green as possible, should you use gas or electric for your heating and cooling needs?
Engineered bacteria could be missing link in energy storage
Thu, 23 May 2019 13:02:03 EDT
One of the big issues with sustainable energy systems is how to store electricity that's generated from wind, solar and waves. At present, no existing technology provides large-scale storage and energy retrieval for sustainable energy at a low financial and environmental cost. Engineered electroactive microbes could be part of the solution.
Producing electricity at estuaries using light and osmosis
Thu, 23 May 2019 11:13:59 EDT
Researchers are working on a technology to exploit osmotic energy -- a source of power that's naturally available at estuaries, where fresh water comes into contact with seawater. In a laboratory experiment, the team reproduced the real-world conditions that occur where rivers meet the sea (pH and salt concentration) and showed that, by shining light on a system comprising salt, water and a membrane three atoms thick, it was possible to optimize electricity production.
Key insight into solar material's soaring efficiency
Thu, 23 May 2019 09:13:09 EDT
Researchers have reported a key breakthrough in how the performance of cadmium telluride thin-film solar cells is improved even further by the addition of another material, selenium.
Researchers gain key insight into solar material's soaring efficiency
Wed, 22 May 2019 17:39:18 EDT
Researchers report a key breakthrough in how the performance of cadmium telluride thin-film solar cells is improved even further by the addition of another material, selenium.
Big energy savings for tiny machines
Wed, 22 May 2019 15:31:33 EDT
Physicists demonstrate for the first time a strategy for manipulating the trillions of tiny molecular nanomachines inside us that work to keep us alive, to maximize efficiency and conserve energy. The breakthrough could impact numerous fields, including creating more efficient computer chips and solar cells for energy generation.
Artificial photosynthesis transforms carbon dioxide into liquefiable fuels
Wed, 22 May 2019 15:31:21 EDT
Chemists have successfully produced fuels using water, carbon dioxide and visible light through artificial photosynthesis. By converting carbon dioxide into more complex molecules like propane, green energy technology is now one step closer to using excess carbon dioxide to store solar energy -- in the form of chemical bonds -- for use when the sun is not shining and in times of peak demand.
Quantum rebar: Quantum dots enhance stability of solar-harvesting perovskite crystals
Wed, 22 May 2019 14:18:48 EDT
Engineering researchers have combined two emerging technologies for next-generation solar power -- and discovered that each one helps stabilize the other. The resulting hybrid material is a major step toward reducing the cost of solar power while multiplying the ways it can be used.
Water formation on the Moon demonstrated
Tue, 21 May 2019 10:14:58 EDT
A new study has shown chemical, physical, and material evidence for water formation on the Moon.
Breakthrough in new material to harness solar power
Tue, 14 May 2019 08:15:54 EDT
Physicists are pushing the performance of solar cells to levels never before reached. They have made a significant breakthrough in the chemical formula and process to make a new material. The ultra-high efficiency material called a tandem perovskite solar cell is being developed to help solve the world energy crisis.
Just like toothpaste: Fluoride radically improves the stability of perovskite solar cells
Mon, 13 May 2019 11:22:31 EDT
Solar cells made of perovskite hold much promise for the future of solar energy. However, the material degrades quickly, severely limiting its efficiency and stability over time. Researchers have discovered that adding a small amount of fluoride to the perovskite leaves a protective layer, increasing stability of the materials and the solar cells significantly.
Copper oxide photocathodes: Laser experiment reveals location of efficiency loss
Thu, 09 May 2019 12:51:43 EDT
Solar cells and photocathodes made of copper oxide might in theory attain high efficiencies for solar energy conversion. In practice, however, large losses occur. Now researchers has been able to use a sophisticated femtosecond laser experiment to determine where these losses take place: not so much at the interfaces, but instead far more in the interior of the crystalline material. These results provide indications on how to improve copper oxide and other metal oxides for applications as energy materials.
Secrets of fluorescent microalgae could lead to super-efficient solar cells
Thu, 09 May 2019 11:22:58 EDT
Tiny light-emitting microalgae, found in the ocean, could hold the secret to the next generation of organic solar cells, according to new research.
Solar-powered hydrogen fuels a step closer
Thu, 09 May 2019 10:18:55 EDT
A cheaper, cleaner and more sustainable way of making hydrogen fuel from water using sunlight is step closer, thanks to new research.
Experimental device generates electricity from the coldness of the universe
Mon, 06 May 2019 16:36:46 EDT
A drawback of solar panels is that they require sunlight to generate electricity. Some have observed that for a device on Earth facing space, the chilling outflow of energy from the device can be harvested using the same kind of optoelectronic physics we have used to harness solar energy. New work looks to provide a potential path to generating electricity like solar cells but that can power electronics at night.
Crowd oil: Fuels from air-conditioning systems
Fri, 03 May 2019 10:08:16 EDT
Researchers have proposed a method enabling air conditioning and ventilation systems to produce synthetic fuels from carbon dioxide (CO2) and water from the ambient air. Compact plants are to separate CO2 from the ambient air directly in buildings and produce synthetic hydrocarbons which can then be used as renewable synthetic oil.
Novel thermoelectric nanoantenna design for use in solar energy harvesting
Fri, 03 May 2019 10:08:04 EDT
Researchers have demonstrated an innovative nanodevice for harvesting solar energy. The article reports that evolutive dipole nanoantennas (EDNs) generate a thermoelectric voltage three times larger than the classic dipole nanoantenna (CDN).
What happens when schools go solar? Overlooked benefits
Thu, 02 May 2019 16:16:52 EDT
Rooftop solar projects at schools could reduce harmful air pollution, help the environment and enhance student learning while cutting electricity costs, a new study finds. Overall, the energy switch could deliver benefits valued at $4 billion.
Researchers make organic solar cells immune to the ravages of water, air and light
Thu, 02 May 2019 14:34:06 EDT
Researchers have devised a way of making organic solar panels robust by performing the molecular equivalent of hair removal by waxing: they used adhesive tape to strip the electron-accepting molecules from the topmost surface of the photoactive layer of the cell.
Peer-to-peer 'free trade' in excess energy
Tue, 30 Apr 2019 10:34:40 EDT
People who generate their own power through solar panels and wind turbines may soon be able to decide where to distribute their excess energy, rather than back to the national grid.