Metal-Halide Perovskites - a Great Platform for Photonic Devices

Metal-halide perovskites have emerged in recent years as a powerful material system in the field of photonics, primarily photovoltaic but also in light emitting applications. These organo-metallic hybrid materials possess properties which render them highly attractive as a platform for a variety of optical devices. They are a direct bandgap semiconductors whose bandgap can be tuned over the whole visible range by modifying their chemical composition. They can be applied on a substrate by means of spin-coating and they exhibit relatively high carrier mobilities which facilitate fast charge separation (for PV) or electrical pumping. On the other hand, this family of materials is very sensitive to humidity and temperature, and tends to deteriorate when exposed to most photo and E-beam resists employed for conventional lithography. Consequently, patterning these materials is very difficult and getting them to operate under CW pumping remains a major challenge. In this talk I will present our efforts during the last decade towards the development of photonic devices based on perovskites platform.