Full Spectrum SOlar

Inhabitat has a post on a new solar material developed at Ohio State University (still well away from commercial production though) - New Solar Material Captures Entire Spectrum of the Rainbow

Scientists at the Ohio State Institute for Materials Research recently announced that they have developed a new hyper-efficient solar material that is able to capture light from every spectrum of the rainbow. Whereas most photovoltaics are limited to collecting energy from a small range of frequencies, the new material is able to absorb energy from all spectrums of visible light at once. The breakthrough development heralds a new breed of extremely efficient solar panels on the horizon.

Sunlight contains the total spectrum of energy emitted by the sun, and visible light contains the range of wavelengths that we perceive as color. Whereas traditional photovoltaic materials only take advantage of certain wavelengths of light, Ohio State’s new material can capture energy from the entire visible spectrum, which results in tremendous gains in the amount of energy it can absorb.

The new electrically-conductive plastic includes materials such as molybdenum and titanium. It operates upon the same principles as standard photovoltaic materials, wherein light energizes the atoms of the material and knocks electrons free to generate a current. Whereas in traditional photovoltaics the electrons are removed for a fraction of a second, in the new hybrid material the electrons are excited for much longer (7 million times) than before.