Researchers at the Australian National University have found a new way to fabricate high efficiency semi-transparent perovskite solar cells in a breakthrough that could lead to more efficient and cheaper solar cells.
The new fabrication method involves adding a small amount of the element indium into one of the cell layers during the manufacture of perovskite solar cells, which can be combined with conventional silicon solar cells to produce more efficient solar electricity.. The researchers say that this could increase the cell’s power output by as much as 25%.
Perovskite solar cells are extremely good at making electricity from visible light while conventional silicon solar cells are more efficient at converting infrared light into electricity. Combining these two types of cells makes much better use of the solar energy and achieves higher efficiencies than either cell on its own.
The research team, led by Dr Tom White, has been able to achieve a record efficiency of 16.6% for a semi-transparent perovskite cell and 24.5% for a perovskite-silicon tandem, which is one of the highest efficiencies reported for this type of cell.