Perovskites: the race for the future of PV? – with Rutger Schlatmann and Angelika Harter

Recorded at the Tandem PV Workshop in Berlin, this week’s episode explores one of the most exciting frontiers in solar technology: perovskite-based tandem photovoltaics. Featuring two leading researchers from Helmholtz Zentrum Berlin (HZB), the conversations dive into why perovskites could unlock the next major leap in solar efficiency – and what still needs to happen before the technology reaches mass commercialization. We’re joined by **Professor Rutger Schlatmann**, Head of the Solar Energy Division at Helmholtz Zentrum Berlin, and **Angelika Harter**, Group Lead Industrial-like Silicon Perovskite Tandem Baseline at HZB, to unpack how perovskite innovation could shape the future of PV – from record-breaking laboratory results to reliable, scalable solar products. In the first conversation, Rutger explains why silicon-perovskite tandem solar cells are attracting so much attention from researchers and the solar industry. With conventional silicon technology approaching its physical efficiency limits, adding a perovskite layer on top of silicon offers a promising pathway to significantly higher performance. In the second half of the episode, Angelika shares insights from the Tandem PV Workshop, where the focus is shifting from simply achieving higher efficiencies toward improving stability, scalability, and reproducibility. We also explore new opportunities for perovskite technologies beyond conventional solar modules – including flexible PV, indoor applications, and space technologies – and why the next five years could prove critical for bringing the first generation of commercial perovskite products to market. The episode also explores: Why silicon solar technology is approaching its efficiency limits How perovskite tandem cells could push PV performance further Why stability and durability are key to commercialization How researchers are scaling perovskite production from lab to factory New applications for perovskites – from flexible solar to space PV --- 🔔 *Subscribe for more conversations on solar, storage, eMobility, and Europe’s energy transition* 🔗 Follow us on LinkedIn: https://www.linkedin.com/company/the-... ✉️ [email protected]