About solar cell applications in the construction of the discussion, has several decades of history, the most people are concerned about the thin-film solar cells. However, some scientists find another way to find the answer directly from the window itself.

According to technology media Phys, a team of scientists at the University of Minnesota invented a photovoltaic window based on a luminescent solar concentrator (LSC) that takes full advantage of the optical properties of silicon nanoparticles by simply implanting silicon nanoparticles on glass Can achieve solar power.

Windows that absorb solar energy, also called photovoltaic windows, are at the forefront of renewable energy technologies. Photovoltaic windows can fully tap the potential of the building and meet people's energy needs without damaging the beauty of architecture.

Scientists implant silicon nanoparticles into the LSC. When the sun shines on the window surface, the LSC absorbs the available light from the sun's rays and reflects the light onto the silicon nanoparticles, absorbing the solar energy.

The complete process is not difficult to understand. By producing silicon nanoparticles using plasma reactors, scientists have turned silicon crystals into nanoscale powdery materials, where each particle consists of about 2000 silicon atoms. Scientists combine the powdery substance into a thin film that looks like a piece of flexible plastic; or it can be applied directly to the surface of the object.

Uwe Kortshagen, a professor of mechanical engineering at the University of Minnesota who presided over the research, told the media: "We reduced the size of the silicon crystal to the nanometer level. At this point, the properties of the silicon crystal changed, turning it into an efficient light emitter. At the same time, it does not absorb its own cold luminescence, making it an ideal material for LSC. "

At present, the team of scientists said that such photovoltaic windows can achieve more than 5% photoelectric conversion efficiency at a lower cost. As for the smooth realization of commercial, but also need to see the follow-up research and development progress.

The study has been published in the recent edition of Nature's optoelectronics section.

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