Synthesis of Millimeter-Size Freestanding Perovskite Nanofilms from Single-Crystal Lead Bromide for Optoelectronic Devices

In this work, we outline a facile strategy for synthesizing perovskite nanofilms and demonstrate a high-performance nanofilm photodetector. This novel synthesis method seeks to develop a new platform for exploiting optoelectronic devices on the basis of free-standing organic-inorganic perovskite nanofilms with high crystal quality.