Cover Feature: Nonradiative Energy Transfer through Distributed Bands in Piezochemically Synthesized Cesium and Formamidinium Lead Halide Perovskites (Chem. Eur. J. 10/2020)

The role of nonradiative energy transfer on photon recycling in perovskite solids has been clarified by preparing thick pellets of lead halide perovskites. Nonradiative energy transfer is detected in piezochemically synthesized perovskite pellets in which the distributed energy states are closely packed. The mixed bromide–iodide lead perovskite with distinct donor–acceptor states is also investigated to clarify the mechanism of photon recycling. More information can be found in the Communication by S. Ghimire, V. Biju et al. on page 2133.