Luminescent solar concentrators (LSC) produce electricity by focusing sunlight on a small area, which works in a similar way as setting fire to dry leaves using a magnifying glass.
However, the problem is that they are quite large and not so attractive, as they have the function, but lack beauty. There have been attempts to integrate solar concentrators with windows, but, as a result, they altered the color and transparency of the glass.
Now, material engineers at Michigan State University have designed totally transparent solar concentrators, which could be built into windows without blocking the light and disturbing the view, or even used on smartphone screens.
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