Light‐Emitting Diodes: Sensitized Yb3+ Luminescence in CsPbCl3 Film for Highly Efficient Near‐Infrared Light‐Emitting Diodes (Adv. Sci. 4/2020)

In article number 1903142, Ayumi Ishii and Tsutomu Miyasaka demonstrate near-infrared light emitting diodes based on an energy transfer from wide bandgap all inorganic perovskite to ytterbium ions as an emitter in the crystalline film. The high light-emitting efficiency around 1000 nm in the perovskite-based diodes provides a new possibility for future optical applications.