See here for the original article.
Basically MIT have created a molecular 'soup' that when exposed to a surfactant breaks down into a solution of nanotubes, phospholipids and other molecules; but once that solution is pushed through a membrane that removes the surfactant, the components recombine to create working solar cells.
In this way any damage caused from being exposed to the Sun can be removed by breaking down the cells and regenerating them.
The current level of efficiency is 40% (that over double the current efficiency level) and the researchers reckon they can go higher.
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