A forest of nanopillars are grown on aluminum foil to produce an inexpensive and efficient 3-D solar cell
By replacing the aluminum with indium and embedding the cell in plastic, the solar cell becomes very flexible
The quest for alternative fuels has become one of science’s major pre-occupations and finding ways to cheaply produce energy from the sun is a key battlefront. Researchers at Berkeley, California, have found a way to make cheaper, better solar cells using tiny nanopillar semiconductors measuring just billionths of a meter wide. The underlying theory is that a 3-D solar cell has more surface – and, therefore, will be a much more efficient light-collector – than the usual 2-D solar cell.
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