Energy & Green Tech
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 ...
Energy & Green Tech
Gravity has been the center of wonderment for physicists, mathematicians and thinkers of all kinds for centuries.
Energy & Green Tech
An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.
Sep 12, 2019
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1622
Energy & Green Tech
Solar panels and wind turbines coupled with energy storage offer a better hope for tackling climate change than trying to capture carbon from fossil fuel power stations, according to new research published by Nature Energy.
Apr 8, 2019
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Electronics & Semiconductors
The energy demands of today's ubiquitous small electronic devices—including sensors, data transmitters, medical implants and 'wearable' consumer products such as Fitbits—can no longer be met by chemical batteries alone. ...
11 hours ago
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Engineering
The output of wind turbines can rise or fall by 50% in a matter of seconds. Such fluctuations in the megawatt range put a strain on both power grids and the turbines themselves. A new study by researchers from the University ...
Sep 19, 2023
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Energy & Green Tech
EPFL researchers have built a pilot-scale solar reactor that produces usable heat and oxygen, in addition to generating hydrogen with unprecedented efficiency for its size.
Apr 17, 2023
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1668
Electronics & Semiconductors
EPFL researchers have come up with a new approach to electronics that involves engineering metastructures at the sub-wavelength scale. It could launch the next generation of ultra-fast devices for exchanging massive amounts ...
Feb 17, 2023
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107
Electronics & Semiconductors
Mesoscopic dye-sensitized solar cells (DSCs) were invented in 1990s by Brian O'Regan and Michael Grätzel, taking on the latter's name—the world-famous Grätzel cells. DSCs convert light into electricity through photosensitizers—dye ...
Oct 26, 2022
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192
Energy & Green Tech
Moving rows of solar panels farther apart can increase efficiency and improve economics in certain instances by allowing greater airflow to whisk away some heat, according to a new analysis.
Oct 25, 2022
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