The research on self-healing behavior of organolead halide perovskite film at QIBEBT (Angew. Chem. Int. Ed., 2015, 54, 9705) was highlighted by Science (Science, 2015, 349, 600). 

Solar Cells - Healing Perovskite Thin Films 

Phil Szuromi 

Inorganic-organic perovskite thin films function best in solar cells when they are free of defects and grain boundaries, but the as-synthesized films are often rough and highly polycrystalline. Zhou et al. now show that methyl ammonium lead iodide (CH₃NH₃PbI₃) rapidly reacts with gas-phase methylamine (CH₃NH₂) to form a liquid, and then reforms a solid film after degassing. Processed films decreased in root mean square roughness by about a factor of 25, and their overall power conversion efficiency in solar cells increased from 5.0 to 14.5% after treatment.