Cheaper solar cells with 20.2 percent efficiency

EPFL scientists have developed a solar-panel material that can cut down on photovoltaic costs while achieving competitive power-conversion efficiency of 20.2%.

Wireless device converts 'lost' energy into electric power

Using inexpensive materials configured and tuned to capture microwave signals, researchers at Duke University's Pratt School of Engineering have designed a power-harvesting device with efficiency similar to that of modern ...

Scientists seek a newer, cheaper solar panel

Solar panels generate electricity by absorbing sunlight, but that is only half the battle. Once electrons in the panel are energized, they must be channeled in the same direction - a process that typically requires a panel ...

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