(765c) Accelerating Emission Dynamics in Perovskites Plasmonic Nanolasers

Halide perovskites are an emerging class of semiconductors with their long exciton lifetimes that drives perovskites’ outstanding photovoltaic performance. However, such slow exciton recombination brings a fundamental limitation for nanophotonic and optoelectronic devices, eg. lasers, in applications such as ultrafast optical information processing and communications. Here we demonstrate an ultrafast perovskite plasmonic nanolaser with high emission enhancement at room temperature by a scalable solution process. The accelerated emission dynamics has been enabled by the strong plasmonic confinement of laser modes via perovskite emission hybridized with surface plasmons. It not only downscales the device but also facilitates its emission efficiency dramatically exhibiting a clear single mode lasing behavior at room temperature. Such accelerated emission dynamics also significantly facilitates laser gain compensation through Einstein equation. The capability to combine plasmonic confinement with ultrafast amplification through perovskites not only promises fundamental physics for accelerating light–matter interactions but also opens new avenues for applications from ultrafast integrated optical communications to implantable computing microchips.