NUS researchers invent new triple-junction tandem solar cells with world-record efficiency

Scientists from the National University of Singapore (NUS) have developed a novel triple-junction perovskite/Si tandem solar cell that can achieve a certified world-record power conversion efficiency of 27.1 per cent across a solar energy absorption area of 1 sq cm, representing the best-performing triple-junction perovskite/Si tandem solar cell thus far. To achieve this, the team engineered a new cyanate-integrated perovskite solar cell that is stable and energy efficient.

Photo battery achieves competitive voltage

Networked intelligent devices and sensors can improve the energy efficiency of consumer products and buildings by monitoring their consumption in real time. Miniature devices like these being developed under the concept of the Internet of Things require energy sources that are as compact as possible in order to function autonomously.

Microdroplets, macro results: Beckman researchers pursue Energy Earthshots

Researchers at the Beckman Institute will conduct electrochemical reactions in microdroplets to produce clean hydrogen, sequester carbon dioxide, and store renewable energies like wind and solar inexpensively and sustainably. Their project, called DROPLETS, received $4.5 million from the U.S. Department of Energy’s Office of Science through its Energy Earthshots Initiative.

Chemists Unravel Reaction Mechanism for Clean Energy Catalyst

Chemists at the University of Kansas and Brookhaven National Laboratory have unraveled the entire reaction mechanism for a key class of water-splitting catalysts. Their work could help pure hydrogen be produced from renewable energy sources such as solar power.

GW Expert Available: Lawmakers vote to repeal President Biden’s suspension of solar tariffs

On Wednesday, Senate lawmakers voted to overturn President Joe Biden’s two-year suspension of tariffs on solar imports from countries in Southeast Asia, according to The Hill. The measure has already been approved by the House. The White House has said President Biden…

Nanoparticles Self-Assemble to Harvest Solar Energy

In APL Photonics, researchers design a solar harvester with enhanced energy conversion capabilities. The device employs a quasiperiodic nanoscale pattern, meaning most of it is an alternating and consistent pattern, while the remaining portion contains random defects that do not affect its performance. The fabrication process makes use of self-assembling nanoparticles, which form an organized material structure based on their interactions with nearby particles without any external instructions. Thermal energy harvested by the device can be transformed to electricity using thermoelectric materials.

Harnessing Plant Molecules to Harvest Solar Energy

ROCKVILLE, MD – Our current solar panels aren’t very efficient; they are only able to convert up to about 20 percent of the sun’s energy into electricity. As a result, to generate a lot of electricity, the panels require a lot of space—sometimes leading forests to be cut down or farms to be replaced by solar.

Research Reveals Thermal Instability of Solar Cells but Offers a Bright Path Forward

A new type of solar technology has seemed promising in recent years. Halide perovskite solar cells are both high performing and low cost for producing electrical energy – two necessary ingredients for any successful solar technology of the future. But new solar cell materials should also match the stability of silicon-based solar cells, which boast more than 25 years of reliability.

Producing ‘green’ energy — literally — from living plant ‘bio-solar cells’

By collecting electrons naturally transported within plant cells, scientists can generate electricity. Now, researchers reporting in ACS Applied Materials & Interfaces have, for the first time, used a succulent plant to create a living “bio-solar cell” that runs on photosynthesis.

Jenny Nelson named Fred Kavli Distinguished Lecturer in Materials Science at 2022 MRS Fall Meeting & Exhibit

WARRENDALE, PA—The Materials Research Society (MRS) announced that Jenny Nelson, Imperial College London, has been selected for the Fred Kavli Distinguished Lectureship in Materials Science for the 2022 MRS Fall Meeting & Exhibit in Boston, Massachusetts. Nelson was selected by the 2022 MRS Fall Meeting Chairs.

Climate Change Consensus Endures in Florida

Seven sequenced surveys since October 2019 paint a comprehensive picture of Floridians’ climate resilience attitudes during a period of particularly dynamic political, economic and environmental events. Climate change has emerged as an abiding and cross-cutting issue in Florida.

Casting Shadows on Solar Cells Connected in Series

Even small objects, such as dust and leaves, can block sunlight from reaching solar cells, and understanding how the loss of incoming radiation affects power output is essential for optimizing photovoltaic technology. In the Journal of Renewable and Sustainable Energy, researchers explore how different shade conditions impact performance of single solar cells and two-cell systems connected in series and parallel. They found that the decrease in output current of a single cell or two cells connected in parallel was nearly identical to the ratio of shade to sunlight. However, for two cells running in series, there was excess power loss.

Scientists Grow Lead-Free Solar Material With a Built-In Switch

A lead-free solar material developed by Berkeley Lab scientists offers a simpler and more sustainable approach to solar cell manufacturing. The advance could also benefit halide perovskites, a promising solar technology that requires much less energy to manufacture than silicon.

Excitons Need Space to Separate: Free Carrier Production in Organic Solar Cells

New investigations have produced a simpler model to elegantly explain previously observed behaviors for free carrier generation in organic solar cells. The model relies on well-established scientific descriptors, Marcus theory and entropy. Previous descriptions proposed new physical phenomena, but a new, simplified model provides a unified platform for understanding processes in both solution and solid-phase systems for organic photochemical conversion.

Solar-Biomass Hybrid System Satisfies Home Heating Requirements in Winter

In Journal of Renewable and Sustainable Energy, researchers in China and the United States outline a computer simulation model addressing the challenge of solar power’s inherent intermittency by adding biomass as another renewable energy source to advance a reliable, affordable heating solution while reducing carbon dioxide emissions. The proposed solar-biomass hybrid system is based on distributed multi-generation technology that integrates photovoltaic-thermal and biomass power sources.

Chula’s Own Solar Cell Project High-powered and Diverse Formats that Meet World Standards

Chula’s researchers have garnered themselves a world-class reward for their latest solar cell project which increases the capacity of electricity production and can be applied to numerous types of merchandise. These new solar cells are guaranteed to meet international standards and develop clean energy for society.

Passive solar could furnish a third of home heating needs

Passive solar heating systems collect natural light via skylights or windows and use it to directly heat spaces, without converting it to electricity. Based on a detailed analysis of heating needs and solar energy availability around the United States, such installations could supply a third of residential space heating needs nationwide, researchers found. The findings, which appear in the November issue of Renewable and Sustainable Energy Reviews, are the first detailed survey of direct solar heating resources in the U.S.

Researchers “Watch” Molten Salts Carve Tiny Nooks and Tunnels into Metal Alloys in 3D

A multidisciplinary team of scientists has used the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy (DOE) Office of Science User facility located at the DOE’s Brookhaven National Laboratory, to investigate how high-temperature molten salts corrode metal alloys.

Combining sunlight and wastewater nitrate to make the world’s No. 2 chemical

Engineers at the University of Illinois Chicago 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.