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Cheaper and lighter compared to its more expensive, cumbersome silicon cousin, plastic photovoltaics (PV) could herald a revolution in the solar power market, according to a UK solar panel expert.

"Plastics are much cheaper to process than silicon. In principle the devices we've been making might be very, very cheap and cover large areas," said David Lidzey from the UK's University of Sheffield.

Unlike rigid silicon panels, plastic (or organic) PV is far more flexible making it easier to install, which Lidzey says could hand it a huge advantage.

"If you've got panels that almost roll up like a big sheet of wallpaper then that might be a very good way of powering developing countries," he said

Polymer solar panels differ from most commercial plastics like polythene which are essentially insulators.

Turning them from a material that prevents conductivity into ones that promote it requires chemists to "tweak their molecular structure," says Lidzey.

But he says some everyday plastic products aren't a million miles away from the plastic PV he's researching.

"If you look at a (chip) packet, what you've got is a plastic film, a few layers of inks and a printed metal layer to keep the materials fresh. Rearrange the order of those layers and you get to a structure that's very similar to the PV devices we're looking at," Lidzey said.

On of the leading lights in developing plastic PV is U.S.-based tech company, Konarka who are already applying their "Power Plastic" technology to a wide range of products including luggage and parasols.