Scale-bridging, multi-modal characterization of metal halide perovskite materials and devices

Abstract

Organic-inorganic hybrid metal halide perovskite solar cells show exceptional optoelectronic properties in line with low-cost and large-scale fabrication and have demonstrated a leap forward in power conversion efficiency (PCE). PCEs emerged from 3.8% in initial studies [1] to today’s certified 25.5% (single-junction) and close to 30% (perovskite-silicon tandem devices) [2]. The main challenge prior to large scale commercialization of this type of solar cells, is now to improve long term stability at the module level. Here, the interplay of multi-modal, scale-bridging (macro to nano) materials and device characterization with probes like focused electron, ion or laser beams and tips and will play a significant role to further advance long term stability, sustainability and recyclability.