Volunteers Help Scientists in Search for Cheap Solar Cells

Solar cells remain a relatively expensive investment for ordinary consumers of electric power. But a group of scientists at Harvard University is looking for cheaper, organic solar cells, which could be painted on rooftops and building facades. In their research, they are employing the help of thousands of volunteers around the world.

Most of today’s solar cells are silicone-based and their manufacture requires sophisticated machinery and expertise. An average home in the United States …

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