Solar Energy News -- ScienceDaily
Solar Energy Information. Read the latest news and techniques for efficient solar photovoltaic power, new solar energy systems and more.
New hybrid device can both capture and store solar energy
20 Nov 2019 at 10:13am
Researchers have reported a new device that can both efficiently capture solar energy and store it until it is needed, offering promise for applications ranging from power generation to distillation and desalination.
Decarbonizing the power sector
19 Nov 2019 at 4:53am
Electricity supply is one of the biggest CO2 emitters globally. To keep global warming well below 2°C, several paths lead to zero emissions in the energy sector, and each has its potential environmental impacts -- such as air and water pollution, land-use or water demand. Using a first-time combination of multiple modelling systems, an international team of researchers has now quantified the actual benefits and downsides of three main roads to decarbonization.
Novel Direct Thermal Charging Cell Converts low-grade waste heat to usable el...
18 Nov 2019 at 8:09am
Engineers can now efficiently convert heat into electricity, creating a huge potential to reduce greenhouse effects by capturing exhaust heat and cutting down primary energy wastage.
Scientists show how perovskite solar cells can capture more electricity
18 Nov 2019 at 7:08am
Scientists have developed a method to analyze which pairs of materials in next-generation perovskite solar cells will harvest the most energy.
Hot electrons harvested without tricks
15 Nov 2019 at 4:03pm
Semiconductors convert energy from photons into an electron current. However, some photons carry too much energy for the material to absorb. These photons produce 'hot electrons', and the excess energy of these electrons is converted into heat. Materials scientists have been looking for ways to harvest this excess energy. Scientists have now shown that this may be easier than expected.
New material points toward highly efficient solar cells
12 Nov 2019 at 1:49pm
A new type of material for next-generation solar cells eliminates the need to use lead, which has been a major roadblock for this technology.
Iron-based solar cells on track to becoming more efficient
12 Nov 2019 at 11:29am
An international study shows that 30% of the energy in a certain type of light-absorbing iron molecule disappears in a previously unknown manner. By closing this loophole, the researchers hope to contribute to the development of more efficient solar cells using this iron-based solar cell.
Perovskite solar cells get an upgrade
5 Nov 2019 at 11:09am
Materials scientists find inorganic compounds quench defects in perovskite-based solar cells and expand their tolerance of light, humidity and heat.
New technique lets researchers map strain in next-gen solar cells
31 Oct 2019 at 2:46pm
Researchers have developed a way to map strain in lead halide perovskite solar cells without harming them. Their approach can image the grain structure of a perovskite solar cell, showing that misorientation between microscopic perovskite crystals is the primary contributor to the buildup of strain within the solar cell. Crystal misorientation creates small-scale defects in the grain structure, which interrupt the transport of electrons within the solar cell and lead to heat loss.
Where to install renewable energy in US to achieve greatest benefits
29 Oct 2019 at 5:07am
A new study shows that to achieve the biggest improvements in public health and the greatest benefits from renewable energy, wind turbines should be installed in the Upper Midwest and solar power should be installed in the Great Lakes and Mid-Atlantic regions.
To rid electric grid of carbon, shore up green energy support
28 Oct 2019 at 2:51pm
Engineers, along with an economist, have created an energy model that helps to remove carbon-generated power from the US electric grid -- replacing it with a greener, financially feasible wind, solar and hydro energy system.
Biological material boosts solar cell performance
22 Oct 2019 at 9:11am
Next-generation solar cells that mimic photosynthesis with biological material may give new meaning to the term 'green technology.' Adding the protein bacteriorhodopsin (bR) to perovskite solar cells boosted the efficiency of the devices in a series of laboratory tests, according to an international team of researchers.
Mix master: Modeling magnetic reconnection in partially ionized plasma
22 Oct 2019 at 6:28am
Many of the most dramatic events in the solar system -- the spectacle of the Northern Lights, the explosiveness of solar flares, and the destructive impact of geomagnetic storms that can disrupt communication and electrical grids on Earth -- are driven in part by a common phenomenon: fast magnetic reconnection. In this process the magnetic field lines in plasma -- the gas-like state of matter consisting of free electrons and atomic nuclei, or ions -- tear, come back together and release large amounts of energy.
Replacing coal with gas or renewables saves billions of gallons of water
21 Oct 2019 at 2:13pm
The transition from coal to natural gas in the US electricity sector is reducing the industry's water use, research finds. For every megawatt of electricity produced using natural gas instead of coal, the water withdrawn from rivers and groundwater drops by 10,500 gallons, and water consumed for cooling and other plant operations and not returned to the environment drops by 260 gallons. Switching to solar or wind power could boost these savings even more.
Why modified carbon nanotubes can help the reproducibility problem
18 Oct 2019 at 10:11am
Scientists have conducted an in-depth study on how carbon nanotubes with oxygen-containing groups can be used to greatly enhance the performance of perovskite solar cells. The newly discovered self-recrystallization ability of perovskite could lead to improvement of low-cost and efficient perovskite solar cells.