Let there be light: reducing photodegradation in promising solar cells
Decreasing cost and enhancing efficiency have been the cornerstones of solar cell research for decades. Perovskite solar cells took the world by storm with their remarkable efficiencies. Now, hybrid perovskite solar cells are on track to deliver what the world wants and needs in terms of cost and efficiency, but they are facing challenges due to photodegradation. Improved methods to characterise photodegradation in situ are required for rational design that overcomes this barrier. The EU-funded iSLIP-NMR project is developing a way to shed light on degradation mechanisms using in situ nuclear magnetic resonance spectroscopy, a powerful characterisation technique related to the MRI scanners used in hospitals. The project's work could lead to solar cells that stand the test of time – and light.