# Proposal of highly efficient photoemitter with strong photon-harvesting capability and exciton superradiance

## TL;DR

This paper introduces a multilayered metal-dielectric system that significantly enhances photoemission efficiency through quantum interference and exciton superradiance, enabling the design of highly efficient photoemitters.

## Contribution

It presents a novel layered structure leveraging plasmon-exciton coupling to achieve enhanced absorption and superradiance, advancing photoemitter technology.

## Key findings

- Enhanced excitonic absorption via quantum interference.
- Observation of exciton superradiance in layered structures.
- Potential for designing highly efficient photoemitters.

## Abstract

We propose a system of highly efficient photoemitters comprising metal-dielectric (plasmonic-excitonic) multilayered structures. In the proposed structure, the absorption in the excitonic layer is greatly enhanced through quantum interference between the split modes arising from the coupling of the layered excitons and the plasmons sustained by the metallic layer. Furthermore, the large interaction volume between surface plasmons and excitons causes exciton superradiance, which results in the extremely efficient photoemission. This finding indicates the possibility of designing highly efficient photoemitters based on simple layered structures.