Thanks to the trick, the solar cells become more stable

So far, there has been no major commercial breakthrough in perovskite solar cells. Lithuanian scientists want to change this. They are based on a new, innovative polymer.

Most solar cells are still made of silicon. But a breakthrough may come for perovskite cells.

Photo: Panthermedia.net/gyuszko

Organic-inorganic hybrid perovskite solar cells are considered to be a promising solution in photovoltaics and a possible alternative to expensive silicon-based cells. They are cheaper to manufacture, more flexible to use and have higher energy conversion efficiency. Their main disadvantage is their poor stability. While silicon solar cells hardly lose their efficiency for 20 years or more, the perovskite cell curve breaks down after weeks or months. Numerous working groups have dealt with the issue of perovskite stabilization – with varying degrees of success.

A group of chemists from the Kaunas University of Technology in Lithuania who have been studying solar energy for a long time are now reporting innovative approaches. Scientists synthesized a new class of carbazole-based cross-linking materials that are resistant to various environmental influences, including the powerful solvents used in solar cell manufacturing. Carbazoles are ring structures made of carbon and nitrogen, hence the name. They can be made quite cheaply.

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