U.S. Companies Study Integrating Solar Cells into Roof Tiles

Solar 3D (California, United States) is conducting a study that it is possible to integrate solar cells directly into roof tiles. Traditional solar cells are not actually suitable for roof tiles because they have a fixed orientation. Solar 3D believes that its 3D solar cell technology can make such products practical.

Like many of the technologies we see, Solar 3D's solar cells can convert as much sunlight into electricity as they can capture sunlight inside solar cells. Traditional solar cells reflect sunlight before they can be absorbed. Solar 3D's solar cells capture sunlight in the photovoltaic structure. This structure is etched in the silicon and the photons will bounce in it, which increases their Absorb opportunities. Solar 3D claims that the internal efficiency of its 3D solar cells is 25.47%, compared with 15% to 19% for commercial solar cells.

In addition, it is important that it is always possible to integrate the roof tiles. Solar 3D's solar cells have a special surface that can capture more light and have a wider capture angle, such as in the morning and evening, and It can be caught in the winter months. The efficiency of traditional solar cells will be greatly reduced. Once the incident angle of sunlight that shines on them becomes very low, this will be the case. Solar 3D claims that this wide-angle light-collecting solar cell can maintain its efficiency because of its wider adaptability. The angle of incidence.

In fact, the company claims that this three-dimensional solar cell can maintain a 25% efficiency, and from the perspective of this range, it produces twice the output power of conventional solar cells.

It is this wide-angle light collection performance that makes Solar 3D want to incorporate this technology into roof tiles. The company, in conjunction with Solar Roofing, Redwood Renewables, collaborated on a study to examine the performance of silicon-based technology because of BIPV (Building Integrated Photovoltaic) applications.

"Everyone wants a low-cost, high-powered solar cell that converts unlimited free solar energy into useful electricity," said Jim Nelson, CEO of Solar 3D. “However, this industry has hit a wall because it is using a traditional 2-dimensional solar cell design. With the solar 3D battery, utility solar power plants can be made smaller and easy to operate without mechanical system tracking. Solar. Space-limited applications, such as rooftop applications, can eventually generate enough useful electricity to successfully counterbalance the electricity of other sources."

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