The super thin solar cell material is flexible without sacrificing power conversion efficiency, researchers say.
Category: solar power – Page 40
Harnessing light with hemispherical shells for improved photovoltaics
In the pursuit of sustainable energy solutions, the quest for more efficient solar cells is paramount. Organic photovoltaic cells have emerged as a promising alternative to traditional silicon-based counterparts due to their flexibility and cost-effectiveness. However, optimizing their performance remains a significant challenge.
In a pioneering move, new research from Abdullah Gül University (Türkiye) reimagines the structure of organic photovoltaic cells, opting for a hemispherical shell shape to unlock unprecedented potential in light absorption and angular coverage.
As reported in the Journal of Photonics for Energy, this innovative configuration aims to maximize light absorption and angular coverage, promising to redefine the landscape of renewable energy technologies. The study presents advanced computational analysis and comparative benchmarks to spotlight the remarkable capabilities of this new design.
Study shows how proteins guide electrons to the right place
Cells need energy to function. Researchers at the University of Gothenburg can now explain how energy is guided in the cell by small atomic movements to reach its destination in the protein. Imitating these structural changes of the proteins could lead to more efficient solar cells in the future.
The sun’s rays are the basis for all the energy that creates life on Earth. Photosynthesis in plants is a prime example, where solar energy is needed for the plant to grow. Special proteins absorb the sun’s rays, and the energy is transported as electrons inside the protein, in a process called charge transfer. In a new study, researchers show how proteins deform to create efficient transport routes for the charges.
“We studied a protein, photolyase, in the fruit fly, whose function is to repair damaged DNA. The DNA repair is powered by solar energy, which is transported in the form of electrons along a chain of four tryptophans (amino acids). The interesting discovery is that the surrounding protein structure was reshaped in a very specific way to guide the electrons along the chain,” explains Sebastian Westenhoff, Professor of Biophysical Chemistry.
Researchers Boost Flexible Electronics Sustainability With Water-Based Inks
The team leveraged ground-state electron transfer to develop water-based conductive ink for use in flexible electronics.
A major trend in electronics has been the emergence of flexible electronics in devices such as solar cells and energy storage. The technology enabling these devices to be flexible and lightweight is organic electronics. However, concerns about the sustainability of producing organic electronics are growing.
Recently, researchers in Sweden tackled the sustainability challenges head-on by developing water-based conductive inks in organic electronics.
A new satellite system sucks in air to provide unlimited propulsion
A new satellite system from Kreios Space only needs air and solar energy for propulsion while improving satellite image resolution 16 fold.
A scalable photoelectrochemical system for green hydrogen production
If realized using solar energy or other renewable energy, water splitting could be a promising way of sustainably producing hydrogen (H2) on a large-scale. Most photoelectrochemical water splitting systems proposed so far, however, have been found to be either inefficient, unstable, or difficult to implement on a large-scale.
Researchers at Ulsan National Institute of Science and Technology (UNIST) recently set out to develop a scalable and efficient photoelectrochemical (PEC) system to produce green hydrogen. Their proposed system, outlined in Nature Energy, is based on an innovative formamidinium lead triiodide (FAPbI3) perovskite-based photoanode, encapsulated by an Ni foil/NiFeOOH electrocatalyst.
“Our group has thoroughly studied the challenges associated with practical solar hydrogen production,” Jae Sung Lee, Professor of Energy & Chemical Engineering at UNIST and co-author of the paper, told Tech Xplore. “As summarized in our most recent review paper, minimum 10% of solar-to-hydrogen (STH) efficiency is required to develop viable practical PEC system, for which selecting an efficient material is the first criteria.”
This modular ‘pop-up solar canopy’ charges EVs off-grid
Meet PairTree – a solar-powered canopy that charges EVs off-grid – that’s made by US-based solar charging infrastructure manufacturer Paired Power.
PairTree, which started to roll out commercially late last year, is quick and easy to set up – it takes only about four hours – and its ballasted steel foundation fits right into a regular parking space. What sets it apart is its use of bifacial solar panels. These 4.6 kW units increase energy yield by up to 15% compared to traditional panels. This means that in practice, a PairTree unit’s performance rivals that of a 5.3 kW solar array.
PairTree features a UL 9450-listed lithium iron phosphate battery energy storage system, offering a spectrum of daily ranges from 75 to 230 miles, depending on the capacity chosen. It can support either one or two Level 2 EV chargers.
World’s most efficient QD solar cells developed by Korean researchers
The researchers claim to have achieved 18 percent energy conversion efficiency, trumping all previous achievements, with just a small change.
Researchers at UNIST have used an innovative method to improve the energy efficiency of organic QD solar cells to 18 percent. Previously, it had peaked at 13 percent.
Researchers develop gold nanowire spectroscopy system to reveal how trions are generated
In a significant advancement for next-generation semiconductors, a collaborative research team has made groundbreaking discoveries in the field of two-dimensional (2D) semiconductors.
Their findings, published in Nano Letters, shed light on the generation and control of trions, providing valuable insights into the optical properties of these materials.
2D semiconductors, known for their exceptional light characteristics per unit volume with high flexibility due to their atomic layer thickness, hold immense potential for applications in areas such as advanced flexible devices, nano photonics, and solar cells.