Tandem Solar Technology Reaches 25% Efficiency

Article originally published by Semiconductor Engineering

Oxford PV says the technology is reaching commercial potential…In the push for ever-more efficient solar panels, researchers are turning to tandem, or double-junction, photovoltaics. Tandem solar panels use two different types of solar cell capable of absorbing different wavelengths of light stacked on top of each other to maximize the conversion of light rays into electrical power.

Recently, two groups have reached a record high efficiency of 25.2% using a perovskite cell in combination with a silicon cell. Perovskite efficiently converts blue and green light, while silicon is better at converting red and infra-red light…