Double-sided solar cells can boost energy yields by 50 percent
An Israeli company called BSolar has developed cost-effective double-sided solar cells.
These could boost energy yields by up to 50 percent if installed on vertical panels.
The dual-sided “bifacial” cells achieve the energy boost by making use of reflective light as well as direct sunlight. The company has taken silicon wavers and engineered them so that they can capture light on both sides. The rear side of the cells are covered in boron instead of the usual aluminium, which has traditionally been used to minimise the loss of electrons during the energy production process. The problem with aluminium is that it can stress or break the fragile silicon wafers. Boron reduces this breakage, improves efficiency of the cells and allows them to be manufactured at a competitive cost.
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