Tagged * Solar Energy™

Microscopic structures could improve perovskite solar cells

Solar cells based on perovskite compounds could soon make electricity generation from sunlight even more efficient and cheaper. The laboratory efficiency of these perovskite solar cells already exceeds that of the well-known silicon solar cells. An international team has found microscopic structures in perovskite crystals that can guide the charge transport in the solar cell….

Why are plants green?

When sunlight shining on a leaf changes rapidly, plants must protect themselves from the ensuing sudden surges of solar energy. To cope with these changes, photosynthetic organisms have developed numerous tactics. Scientists have been unable, however, to identify the underlying design principle. A physicist has now constructed a model that reproduces a general feature of…

Double-sided solar panels that follow the sun prove most cost effective

Solar power systems with double-sided (bifacial) solar panels — which collect sunlight from two sides instead of one — and single-axis tracking technology that tilts the panels so they can follow the sun are the most cost effective to date, researchers report. They determined that this combination of technologies produces almost 35% more energy, on…

Engineers demonstrate next-generation solar cells can take the heat, maintain efficiency

Engineers have developed a next-generation solar cell that takes advantage of the promising elctro-optical properties of perovskite materials. They’ve made the materials much more stable at high temperatures and demonstrated a consistent, clean way to fabricate them into solar cells. Those could be important steps toward commercial production of new, low-cost, efficient, lightweight and flexible…

A clear semiconductor based on tin could improve solar power generation

Mobility is a key parameter for semiconductor performance and relates to how quickly and easily electrons can move inside a substance. Researchers have achieved the highest mobility among thin films of tin dioxide ever reported. This high mobility could allow engineers to create thin and even transparent tin dioxide semiconductors for use in next-generation LED…

Six-junction solar cell sets two world records for efficiency

Scientists have fabricated a solar cell with an efficiency of nearly 50%. The six-junction solar cell now holds the world record for the highest solar conversion efficiency at 47.1%, which was measured under concentrated illumination. A variation of the same cell also set the efficiency record under one-sun illumination at 39.2%. Read Full Article Here…

Tandem solar cell world record

A special branch in the famous NREL-chart for solar cell world records refers to a newly developed tandem solar cell. The world-record cell combines the semiconductors perovskite and CIGS to a monolithic ‘two-terminal’ tandem cell. Due to the thin-film technologies used, such tandem cells survive much longer in space and can even be produced on…

Smaller scale solutions needed for rapid progress towards emissions targets

Low-carbon technologies that are smaller scale, more affordable, and can be mass deployed are more likely to enable a faster transition to net-zero emissions, according to a new study. Innovations ranging from solar panels to electric bikes also have lower investment risks, greater potential for improvement in both cost and performance, and more scope for…

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