Information engine operates with nearly perfect efficiency
2 hours ago feature
Physicists have experimentally demonstrated an information engine—a device that converts information into work—with an efficiency that exceeds the conventional second law of thermodynamics. Instead, the engine's efficiency ...
Slow 'hot electrons' could improve solar cell efficiency
Jan 16, 2018
Photons with energy higher than the band gap of the semiconductor absorbing them give rise to what are known as hot electrons. The extra energy in respect to the band gap is lost very fast, as it is converted into heat and ...
The LEC—now an efficient and bright device
Jan 11, 2018
Researchers from Umeå University and Linköping University in Sweden have developed light-emitting electrochemical cells (LECs) that emit strong light at high efficiency. As such, the thin, flexible and lightweight LEC promises ...
Climate change and sustainable lifestyles
Jan 10, 2018
Professor Ricardo García-Mira is currently a Member of the Parliament of Spain, and is the Spokesperson of the Commission for the Study of Climate Change. He is a Professor of Social and Environmental Psychology at the University ...
How playing games on your phone or tablet could cut your power bill
Jan 05, 2018
Summer has arrived, and with it, soaring energy bills. Australian households are paying more for their power as generators struggle to meet consumer demand.
Nearly zero-energy buildings remain a difficult challenge for Southern Europe
Dec 20, 2017
In coming years, there is a legal commitment for all the countries of Europe to improve the energy efficiency of buildings, which boils down to constructing nearly zero-energy buildings (nZEBs), buildings that consume the ...
Fully screen-printed monoPoly silicon solar cell technology
Dec 14, 2017
The Solar Energy Research Institute of Singapore (SERIS) at the National University of Singapore (NUS) has reached a new cell efficiency milestone in the development of its low-cost screen-printed bifacial monoPoly silicon ...
Guanidinium stabilizes perovskite solar cells at 19 percent efficiency
Dec 08, 2017
With the power-conversion efficiency of silicon solar cells plateauing around 25%, perovskites are now ideally placed to become the market's next generation of photovoltaics. In particular, organic-inorganic lead halide perovskites ...
Catalyzing carbon dioxide: System can transform CO2 into CO for use in industry
Dec 05, 2017
On any given day, more than 2 million pounds of carbon dioxide are pumped into the atmosphere from factories, emissions from cars and trucks and the burning of coal and natural gas to generate electricity.
Discovery could bring better efficiency to a new class of solar cells
Dec 01, 2017
Since the 2009 discovery of a highly energy-efficient class of solar cell materials known as HOIPs – hybrid organic-inorganic perovskites – researchers have been working to understand exactly how these promising materials ...