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SunCurtain GmbH

Solar slat curtain

The generator at the window

photo: SunCurtain

Suncurtain has developed a solar slat curtain. The blades are made of organic solar films produced by Armor Solar Power Films. They convert a portion of the incident sunlight into electricity. This is transmitted via the curtain rail to an inverter. From there, it can be fed into the house grid and used on site.

Suncurtain thus kills two birds with one stone. On the one hand, the curtain prevents excessive heat build-up in the room and thus reduces the need for cooling. On the other hand, because the blinds are semi-transparent, they still allow sufficient daylight to enter the room even when the curtain is closed. In addition, it does not block the view outside. On the other hand, it provides electricity that can be used directly in the building or even in the room, for example, to supply energy to the workplace.

Individual design is possible

In addition, Suncurtain can adapt the design to the user’s criteria. Thus, different lengths and widths of the slats are possible. Currently, the curtains are available in blue, red, green and gray with different transparency in the portfolio of Suncurtain. In addition, the customer can choose between matte and glossy surface.

Indoor application with organic photovoltaics

The use of organic solar films has advantages especially for indoor applications as solar shading. It is true that the efficiency of organic solar films is far below that of crystalline solar modules. However, on the one hand, this allows areas to be used for electricity production that would otherwise remain fallow. This is because it is hardly economical to use crystalline solar cells in a vertical orientation indoors. On the other hand, organic solar films cope much better with low light and use the lowest light intensity to produce electricity. They can even utilize artificial light. In this way, they produce more electricity in such an installation situation than any other semiconductor technology.

Efficiency increases with temperature

On the other hand, organic solar films have a negative temperature coefficient. This means that they gain power as temperatures rise. This is different for all other technologies. These lose power the warmer they get. This is especially crucial for solar shading systems. This is because they are designed to absorb the sun’s heat rays and ensure that less heat enters the rooms. As a result, it is their job to absorb a large part of the summer heat. This can be done better with organic solar films than with inorganic technologies.

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