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Researchers develop cheaper way of making solar

26 June 2014 Last updated at 15:09 BST

Researchers have developed a new manufacturing method which could bring down the cost of making a type of solar cell.

A team at Liverpool University has found a way of replacing the toxic element in the process with a material found in bath salts.

The scientists say that this could have a "massive, unexpected cost benefit".

Pallab Ghosh reports

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