Tech 

New solar cells at HZB

This could be a breakthrough in the field of solar cells, and we certainly have a record. Scientists from HZB managed to develop the most efficient panel.

Silicon photovoltaic cells are currently the most popular. High efficiency and durability combined with relatively low production costs are their biggest advantages. But perovskite cells are slowly but surely coming into play. The technology, introduced by Poland’s Olga Malinkiewicz, has even more advantages: greater efficiency, transparency, flexibility, quick return on investment and very little impact on the environment.

They combined silicon and perovskite. They achieved record efficiency

However, it turned out – specifically: the results of experiments by scientists from HZB in Berlin – that the optimal solution can be a combination of both technologies. Prototype silicon-perovskite cells have already achieved record efficiency: they convert as much as 32.5% of solar radiation into electricity (the previous record achieved a few months ago was 31.25%). The result was officially confirmed by the Italian ESTI (European Solar Test Installation).

This is what a new solar cell looks like (divided into layers). Photo: Eike Köhnen/HZB

Why is the combination of these materials more effective than using them separately? Well, because silicon cells capture red and infrared light better, and perovskite cells – blue. In addition, the performance is improved by a new interface between the active area and the electrodes. – “This is a really big step forward. We didn’t expect that” – admitted prof. Steve Albrecht.

The enormous potential of solar panels

As you can see, solar panels could become even more efficient in the coming years, and green energy – both on a small and large scale – is profitable and increasingly used. We keep our fingers crossed for further development in this field.

Source: Helmholtz Zentrum Berlin, New Atlas. Entrance photo: Johannes Beckedahl/Lea Zimmerman/HZB

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