Those people at MIT are at it again. This time, they’re printing solar cells on paper. This is still in the laboratory stage but it seems inevitable it will eventually become a commercial product. We have no doubt you will be able to buy solar cells in rolls in a couple years and staple them wherever the sun does shine.

Paper is coated with an organic semiconductor material using a process similar to printing with an inkjet printer. So far, the cells are only about two percent efficient at converting sunlight to electricity, but it’s a start. The aim is for 10 percent, which would still be below the efficiency of silicon based solar cells, but way cheaper.

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