Researchers from Germany’s Karlsruhe Institute of Technology created a pair of sunglasses that generate electricity via solar cells. The solar cells are organic instead of silicon, they are transparent, flexible, lightweight, and can be manufactured in a variety of colors and shapes. Each solar cell lens weighs 6 grams, is 1.6 mm thick, and fits into sunglasses frames, that house electronics, including a microprocessor, two sensors and two displays. The lenses power those electronics, which measure and display the current illumination intensity and ambient temperature.
Each lens generates 0,2 Watts of power under indoor illumination down to 500 lux. This isn’t to much power, but it’s enough to power a device such as a hearing aid or a step counter. The technology could conceivably also be applied to the windows of buildings, where it would generate much more power.
A paper on the research was recently published in the journal Energy Technology.
Source: Karlsruhe Institute of Technology
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