The world's thinnest solar cell has been developed
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While graphene has recently captured the spotlight as a revolutionary material, the latest breakthrough in solar technology isn't related to it. Researchers at the Vienna University of Technology have unveiled what they claim is the world's thinnest solar cell, made from a completely different material.
This new innovation uses tungsten selenide, a compound that efficiently absorbs light and is ideal for photovoltaic applications. The structure is incredibly thin—just a few atoms thick, consisting of a single layer of tungsten atoms sandwiched between two layers of selenium. This design makes it one of the most compact solar cells ever created.
Due to its extreme thinness, the device allows 95% of light to pass through, meaning only 5% is absorbed and converted into electricity. However, despite this low absorption rate, the efficiency is still impressive given the material’s unique properties. The research team believes this could be a game-changer, especially for architectural integration, as it can be applied to windows or other transparent surfaces without blocking natural light.
Although commercial production is still in the early stages, the researchers are optimistic about its future. They predict that this technology could soon become widely available, offering a new way to harness solar energy without compromising aesthetics or functionality. With further development, tungsten selenide-based solar cells might play a major role in the next generation of clean energy solutions.
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