Tempo Molecute technology promotes the sustainability and efficiency of perovskiet solar cells
A team of researchers has introduced a new method to drastically improve the performance and stability of perovskite solar cells, so that a long -term barrier for their widespread use is overcome. The approach, seen in Joule, uses the molecult tempo (2,2,6,6-tetramethylpiperidine-1-oxyl) and a short infrared heating stuff to restore internal crystal defects in the solar cell material.
Under the leadership of the Ecole Polytechnique Federale de Lausanne (EPFL) and supported by the University of Applied Sciences and Arts of West-Switzerland (HES-SO) and the Politecnico di Milano, the study shows that this bulk passivating technique significantly increases that the efficiency is maintained under the end-of-the-year-olds.
With the help of positron-annihilation spectroscopy, the researchers confirmed that the treatment of tempo vacancy type defects within the perovskiet layer. This fast, solvent-free method is also compatible with scalable roll-to-roll production processes, similar to those used in the pressure industry.
“The proposed method is fast, solvent-free and compatible with roll-to-roll processing, similar to it used in the pressure industry. This makes technology not only promising in the lab, but also for future production on an industrial scale,” said Rafael Ferragut, physicist at the Politecnico di Milano and co-author of the paper.
The findings form a leap in the direction of commercial production of lightweight and sustainable solar panels that can be integrated into buildings or are used in flexible electronics and portable devices.
Research report:Tempo bulk passivation increases performance and operational stability of fast-prepared FAPI perovskiet solar cells
