Solar Energy News -- ScienceDaily
Solar cells with 30-year lifetimes for power-generating windows
Tue, 14 Sep 2021 11:12:55 EDT
A new transparency-friendly solar cell design could marry high efficiencies with 30-year estimated lifetimes, new research has shown. It may pave the way for windows that also provide solar power.
Time to shine: Scientists reveal at an atomic scale how chlorine stabilizes next-gen solar cells
Fri, 10 Sep 2021 12:16:44 EDT
Researchers have imaged the atoms at the surface of the light-absorbing layer in a new type of next-generation solar cells, made from a crystal material called metal-halide perovskite. Their findings have solved a long-standing mystery in the field of solar power technology, showing how power-boosting and stability-enhancing chlorine is incorporated into the perovskite material.
Combining sunlight and wastewater nitrate to make the world’s No. 2 chemical
Wed, 08 Sep 2021 18:05:54 EDT
Engineers have created a solar-powered electrochemical reaction that not only uses wastewater to make ammonia -- the second most-produced chemical in the world -- but also achieves a solar-to-fuel efficiency that is 10 times better than any other comparable technology.
Turning thermal energy into electricity
Mon, 30 Aug 2021 14:02:29 EDT
With the addition of sensors and enhanced communication tools, providing lightweight, portable power has become even more challenging. New research demonstrated a new approach to turning thermal energy into electricity that could provide compact and efficient power.
Polymer scientist helps develop new technique for large-scale energy storage
Thu, 19 Aug 2021 12:52:43 EDT
Electric vehicles require power to be available anywhere and anytime without delay to recharge, but solar and wind are intermittent energy sources that are not available on demand. And the electricity they do generate needs to be stored for later use and not go to waste. New research reveals a more stable way to store this important energy.
Common solar tech can power smart devices indoors
Thu, 19 Aug 2021 10:27:00 EDT
Any time you turn on a light at home or in the office, you are expending electrical energy. But what if flipping the light switch meant providing other useful energy too? We usually think of solar, or photovoltaic (PV), cells fixed to roofs, converting sunlight into electricity, but bringing that technology indoors could further boost the energy efficiency of buildings and energize swaths of wireless smart technologies such as smoke alarms, cameras and temperature sensors, also called Internet of Things (IoT) devices. Now, a new study suggests that a straightforward approach for capturing light indoors may be within reach.
Combining perovskite with silicon, solar cells convert more energy from sun
Tue, 17 Aug 2021 11:14:39 EDT
To fully harness the potential of sunlight, scientists have been trying to maximize the amount of energy that can be extracted from the sun. Researchers now describe how pairing metal halide perovskites with conventional silicon leads to a more powerful solar cell that overcomes the 26% practical efficiency limit of using silicon cells alone. Perovskites fulfill all the optoelectronic requirements for a photovoltaic cell, and they can be manufactured using existing processes.
New clean energy tech extracts twice the power from ocean waves
Tue, 17 Aug 2021 10:27:23 EDT
New prototype tech can double the power harvested from ocean waves, an advance that could finally make wave energy a viable renewable alternative.
Enabling the next generation of organic solar cells
Wed, 11 Aug 2021 13:15:33 EDT
Researchers have discovered a new, faster way in which organic materials redistribute sunlight energy, which could enable the next generation of organic solar cells to convert sunlight into electrical power and help in the battle against climate change.
Powering navigational buoys with help of ocean waves
Wed, 04 Aug 2021 21:01:41 EDT
Traditionally used energy harvesting technologies, like photovoltaic panels or wind turbines, suffer from several limitations. In the absence of daylight and wind, neither of the two can supply any power. In the case of ocean buoys, a potential solution is omnipresent: wave energy. Abundant, predictable, and consistent, the ocean's waves can be used to power navigation buoys. Researchers have developed sphere-based triboelectric nanogenerators that can be incorporated directly into navigational buoys to provide electricity from ocean waves.
Solar-powered microbes to feed the world?
Fri, 30 Jul 2021 10:43:03 EDT
An international research team has shown that using solar-panels to produce microbial protein -- which is rich not just in proteins but also in other nutrients -- is more sustainable, efficient and environmentally friendly than growing conventional crops. This method uses solar energy, land, nutrients, and carbon dioxide from the air.
Machine learning models to help photovoltaic systems find their place in the sun
Tue, 20 Jul 2021 12:23:40 EDT
Scientists develop algorithms that predict the output of solar cells, easing their integration into existing power grids.
Renewable energies: No wind turbine disturbing the scenery
Tue, 20 Jul 2021 11:44:41 EDT
In the Alpine foothills, in low mountain ranges, or on the seacoast, expansion of wind energy use often meets popular resistance. Researchers have now studied what this means for the energy transition.
Solar cells: Boosting photovoltaic effect in ferroelectric-paraelectric superlattices
Tue, 20 Jul 2021 11:44:38 EDT
The photovoltaic effect of ferroelectric crystals can be increased by a factor of 1,000 if three different materials are arranged periodically in a lattice. Researchers achieved this by creating crystalline layers of barium titanate, strontium titanate and calcium titanate which they alternately placed on top of one another. These findings could significantly increase the efficiency of solar cells.
Renewable energy OK, but not too close to home
Mon, 19 Jul 2021 12:03:40 EDT
When it comes to transitioning from carbon-based to renewable source energy systems, Americans are on board. They're less keen, however, having these new energy infrastructures built close to their homes.
Removing the lead hazard from perovskite solar cells
Thu, 15 Jul 2021 09:08:29 EDT
Although a very promising solution for capturing solar energy, perovskite solar cells contain lead, which is toxic to the environment and a serious health hazard. Scientists have now found a very elegant and efficient solution by adding a transparent phosphate salt that doesn't interfere with light-conversion efficiency while preventing lead from seeping into the soil in cases of solar panel failure.
Giving a 'tandem' boost to solar-powered water splitting
Mon, 12 Jul 2021 10:22:23 EDT
Scientists combine two promising photocatalysts to obtain higher solar-to-hydrogen conversion efficiency and durability in a water splitting cell.
Collective battery storage beneficial for decarbonized world
Thu, 08 Jul 2021 10:36:25 EDT
Batteries are potentially a game-changing technology as we decarbonize our economy, and their benefits are even greater when shared across communities, a new study has found.
Reducing the melting of Greenland ice cap using solar geoengineering?
Wed, 07 Jul 2021 16:05:01 EDT
Injecting sulphur into the stratosphere to reduce solar radiation and stop the Greenland ice cap from melting: An interesting scenario, but not without risks. Climatologists have looked into the matter and have tested one of the scenarios put forward using the MAR climate model. The results are mixed.
Cutting through noise for better solar cells
Wed, 07 Jul 2021 11:25:04 EDT
Physicists used cross-correlation noise spectroscopy to measure miniscule fluctuations in electrical current flowing between materials inside silicon solar cells. The researchers identified crucial electrical noise signals that are completely invisible to conventional noise-measuring methods. They were also able to pinpoint the likely physical processes causing the noise, which often results in a loss of energy and lower efficiency. The technique is an important new tool to improve material interfaces for a better solar cell.