Testing spray-on solar cells

A microscopic sensor to detect toxins needs a power source.  Xiaomei Jiang and colleagues at the University of South Florida respond with an array of 20 polymer-based cells, each about the size of a 12-point lower-case letter O.

The polymer they selected has the same electrical properties as silicon wafers, but can be dissolved and printed onto flexible material. “I think these materials have a lot more potential than traditional silicon,” Jiang said. They could be sprayed on any surface that is exposed to sunlight — a uniform, a car, a house.”

The next step is to test the array with the sensors. The team hopes to generate 15 volts by the end of the year.

[Sun Spray by littleblackcamera]

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