Scientists have developed “perfect” solar panels with an efficiency of 24%: how they work

A new passivation process significantly reduces defects and increases the energy conversion efficiency and stability of perovskite solar cells.

A new passivation process developed by researchers at the Gwangju Institute of Science and Technology (GIST, South Korea) for perovskite films provides an energy conversion efficiency of 24.13% in solar panels. About this writes interestingengineering.com.

The new passivation process significantly reduces defects and improves the energy conversion efficiency and stability of perovskite solar cells.

Researchers introduced a hexagonal perovskite polytype (6H) to reduce defects in perovskite cells, resulting in improved energy conversion efficiency and operational stability of solar cells. batteries, how to compare with existing analogues.

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The typical approach until now has been to inject an external chemical reagent to solve the problem of defects. However, the introduction of external reagents can directly affect the crystalline quality of the perovskite during crystal growth, so scientists do not rely on such stabilizers. Instead, they use a chemically identical perovskite polytype, the 6H polytype, which contains a component that effectively suppresses the formation of defects in the perovskite.

The researchers found that 6H improved the structural integrity and dynamics of the photovoltaic cells. This resulted in an ultra-long battery life of over 18 microseconds, an efficiency of 24.13% and a power conversion efficiency of 21.44%.

The scientists also realized how engineering defects in the perovskite could accelerate the development of advanced solar panels for commercial use. applications such as rooftops, portable electronics and portable chargers.

Periodescent solar cells offer a transformative solution to achieving carbon neutrality and addressing global warming. Their efficiency, versatility and reduced environmental impact make them an important component in the transition to a sustainable future.