Metamaterial enhancement of metal-halide perovskite luminescence

TL;DR

This paper demonstrates that plasmonic metamaterials can significantly enhance the luminescence and emission efficiency of metal-halide perovskites, advancing their application in light-emitting devices.

Contribution

It introduces a novel plasmonic metamaterial design that boosts perovskite luminescence by over tenfold and reduces emission lifetime, improving device performance.

Findings

Over tenfold increase in luminescence intensity.

Nearly threefold reduction in luminescence lifetime.

Effective control of emission properties via nanostructures.

Abstract

Metal-halide perovskites are rapidly emerging as solution-processable optical materials for light emitting applications. Here we adopt a plasmonic metamaterial approach to enhance photoluminescence emission and extraction of methylammonium lead iodide (MAPbI3) thin films, based on the Purcell effect. We show that hybridization of the active metal-halide film with resonant nanoscale sized slits carved into a gold film can yield more than one order of magnitude enhancement of luminescence intensity, and nearly threefold reduction of luminescence lifetime. This shows the effectiveness of resonant nanostructures in controlling metal-halide perovskite light emission properties over a tunable spectral range, a viable approach toward highly efficient perovskite light emitting devices and single-photon emitters.