Ultranarrow electroluminescence from magnetic excitons in the van der Waals antiferromagnetic semiconductor NiPS₃.

ABSTRACT: Electrically driven light emission from two-dimensional (2D) semiconducting materials has enabled numerous optoelectronic technologies, including light-emitting diodes, solid-state lasers, and single-photon sources for quantum communication. Here we report ultranarrow electroluminescence from the magnetic excitonic state of the van der Waals antiferromagnetic semiconductor NiPS₃. This electroluminescence is enabled by the fabrication of gate-tunable NiPS₃ devices that remain electrically conductive below the antiferromagnetic ordering temperature of 155 K, ultimately allowing field-effect mobilities of 1.3 cm²V^-1 s^-1 and 4.5 cm²V^-1 s^-1 to be directly measured at room temperature and 7 K, respectively.

SUBMITTER: Lebedev D 

PROVIDER: S-EPMC12658112 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature