Neue biegbare Solarzellen bleiben für 2.000 Stunden unter Hitze und Luftfeuchtigkeit stabil | Ein europäisches Konsortium hat Fortschritte bei der Entwicklung flexibler, kostengünstiger Perovskit-Solarzellen mit Kohlenstoffelektroden erzielt.

From the article: European consortium has made progress in developing flexible, low-cost perovskite solar cells with carbon electrodes.

The PEARL consortium, a three-year Horizon Europe project, has already surpassed 21% efficiency on flexible, bendable substrates, bringing them closer to their 25% efficiency target.

The consortium uses the Roll-to-roll (R2R) manufacturing technique for producing flexible and thin-film products.

“Our flexible perovskite cells have already surpassed 21% efficiency on bendable substrates, and we’ve demonstrated scalable roll-to-roll processes,” said Dr. Riikka Suhonen, PEARL Project Coordinator at Finland’s Teknologian Tutkimuskeskus (VTT).

“These achievements bring us firmly within reach of our 25 % target – paving the way to low-cost, high-performance solar modules for applications from building-integrated photovoltaics to the Internet of Things,” Suhonen added.

The PEARL consortium [website](https://www.pearl-project.eu/about/) describes that the main goal is to create flexible perovskite solar cells with carbon electrodes that are industrially viable and environmentally friendly.

This approach aims to achieve a high efficiency of over 25% while simultaneously reducing production costs to below 0.3 EUR/Wp and minimizing emissions to less than 0.01 kg CO2eq/kWh.

Using carbon electrodes also improves device stability, surpassing the operational stability standards.

Recently, the consortium has improved the durability of its flexible solar cells by developing a new protective encapsulation.

This encapsulation allows the cells to remain stable for over 2,000 hours under extreme damp-heat conditions, specifically at a temperature of 85°C and 85% humidity.

The achievement demonstrates the solar cells’ robustness and potential for reliable performance in real-world environments.