The purple juice from the berries can be used to coat inexpensive fiber-based solar cells, increasing efficiency, say researchers.
Pokeberries proliferate even during drought and in rocky, infertile soil. That means residents of rural Africa, for instance, could raise the plants for pennies. Then they could make the dye absorber for the extremely efficient fiber cells and provide energy where power lines don’t run.
The fiber cells can produce twice as much power as current flat-calls, and at a lower cost.