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Energy & Green Tech

Re-awakening the world's first solar cells for indoor photovoltaics applications

The world's first solid-state photovoltaics were reported in 1883, and were composed of selenium, which eventually led to the development of the present-day photovoltaics, although the wide bandgap of selenium was limiting ...

Electronics & Semiconductors

Spray-on smart skin uses AI to rapidly understand hand tasks

A new smart skin developed at Stanford University might foretell a day when people type on invisible keyboards, identify objects by touch alone, or allow users to communicate by hand gestures with apps in immersive environments.

Energy & Green Tech

Improving the operational stability of perovskite solar cells

Hybrid perovskites are materials made from metal halide frameworks interspersed with organic cations. They have attracted a lot of interest in the field of solar energy because of their light-harvesting capacity combined ...

Consumer & Gadgets

A type of simple DIY air filter can be an effective way to filter out indoor air pollutants

A team of researchers from Brown University's School of Public Health, Brown's School of Engineering and Silent Spring Institute found that simple air filtration devices called Corsi-Rosenthal boxes are effective at reducing ...

Engineering

New method addresses problem with perovskite solar cells

A new approach to manufacturing perovskite solar cells has addressed previous problems and yielded devices with high efficiency and excellent stability, researchers at the National Renewable Energy Laboratory (NREL) report ...

Engineering

Researchers zoom in on battery wear and tear

From the moment you first use it, a new lithium-ion battery is degrading. After a few hundred charge cycles, you'll notice—your phone, laptop or electric car battery wears out more quickly. Eventually, it stops holding ...