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Small organic molecules capable of absorbing certain wavelengths of sunlight that are invisible to the human eye. “We can tune these materials to pick up just the ultraviolet and the near infrared wavelengths that then ‘glow’ at another wavelength in the infrared,” MSU assistant professor of chemical engineering and materials science. “Because the materials do not absorb or emit light in the invisible spectrum, they look exceptionally transparent to the human eye.”
Once absorbed, the light waves get trapped and guided to the edges of the plastic solar concentrator where photovoltaic cells turn them into electricity.
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