Light-Emitting Diodes

Abstract

A room-temperature electrically tunable chiral lightemitting diode is realized by Jiang Pu, Taishi Takenobu, and co-workers in article number 2100601, using strained monolayer transition-metal dichalcogenides. The strain effects break the three-fold rotational symmetry, which results in different amounts of spin recombination at the K/K’ valleys to generate chiral light emission driven by electric fields. The results provide a new pathway for practical chiral light sources based on monolayer semiconductors.