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بهترین سایت شرط بندی ایرانی
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Global Statistics

All countries
695,781,740
Confirmed
Updated on September 26, 2023 9:04 pm
All countries
627,110,498
Recovered
Updated on September 26, 2023 9:04 pm
All countries
6,919,573
Deaths
Updated on September 26, 2023 9:04 pm

Global Statistics

All countries
695,781,740
Confirmed
Updated on September 26, 2023 9:04 pm
All countries
627,110,498
Recovered
Updated on September 26, 2023 9:04 pm
All countries
6,919,573
Deaths
Updated on September 26, 2023 9:04 pm

Windows become transparent solar panels with added nanoparticles

Climate change, population growth threats as malaria fight stalls

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How Much Weight Men Should Be Able to Deadlift

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Technology



7 September 2020

By Donna Lu

New Scientist Default Image

These transparent solar panels have a brown or grey tint

UbiQd

Ordinary glass panels can act as solar panels when a layer of nanoparticles is sandwiched between two panes, which could help take advantage of solar energy in cities where space for solar panels may be limited.

“If we’ve done our job, no one will even know that they’re there,” says Hunter McDaniel at UbiQD, a materials manufacturing firm in the US. He and his colleagues have developed transparent solar panels that are indistinguishable from regular glass.

Test installations, involving panels that are one square metre in size, are underway in buildings in the US and the Netherlands. The panels have a power conversion efficiency of 3.6 per cent – opaque solar panels, in comparison, have efficiencies between 15 and 20 per cent.

Advertisement

These transparent panels are made from two layers of glass glued together with a polymer that contains nanoparticles known as quantum dots. With a core of copper indium sulphide and a shell of zinc sulphide, these quantum dots are tiny semiconductors that can manipulate light.

When the particles are excited by exposure to UV light, they release photons that travel along the transparent panel towards its edge. The perimeter is fitted with solar cells, which convert the photons into electrical current. The solar cell edging sits in the frame of a window, out of plain sight.

It doesn’t take much to convert the windows to solar panels: the polymer is just 1.7 per cent quantum dots by weight. The quantum dots are non-toxic and also relatively cheap to produce, says McDaniel.

The resulting panels are brownish in colour, but the team showed they could also produce panels of a grey or grey-blue colour by mixing in a blue dye.

The transparency of the glass is also possible to customise, to make panels with a darker or lighter tint. The darker the tint, the greater the energy output, as more light is absorbed. “It’s basically an almost linear relationship,” says McDaniel.

Journal reference: Journal of ACS Applied Materials, DOI: 10.1021/acsaem.0c01288

More on these topics:

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