Perovskite Light‐Emitting Electrochemical Cells Employing Electron Injection/Transport Layers of Ionic Transition Metal Complexes

A layer of ionic transition metal complex promotes electron injection and transport, resulting in an improved carrier balance of green CsPbBr3 perovskite/iTMC light-emitting electrochemical cells (LECs). The optimized external quantum efficiency reaches 6.8 %, which is among the highest values reported for perovskite LECs so far. More information can be found in the Research Article by C.-W. Lu, Z.-P. Yang, H.-C. Su, et al. (DOI: 10.1002/chem.202103739).