Greatly enhanced light emission of MoS$_{2}$ using photonic crystal heterojunction

TL;DR

This paper demonstrates that a one-dimensional photonic crystal heterojunction significantly enhances light absorption and emission in monolayer MoS₂, leading to a 100-1000 fold increase in photoluminescence.

Contribution

It provides an analytical solution for light absorption and emission in 2D materials within 1D photonic crystal heterojunctions, showing simultaneous enhancement across multiple frequencies.

Findings

Enhanced light absorption and emission in MoS₂ by 2-3 orders of magnitude.

Analytical model for light behavior in 2D materials with 1D h-PhC.

Multiple frequency range enhancement due to photon localization.

Abstract

We study the effect of one-dimensional (1D) photonic crystal heterojunction (h-PhC) on the light absorption and light emission of monolayer molybdenum disulfide (MoS$_{2}$), and obtained the analytical solution of the light absorption and emission of two-dimensional materials in 1D h-PhC. Simultaneously enhancing the light absorption and emission of the medium in multiple frequency ranges is easy as h-PhC has more models of photon localization than the common photonic crystal. Result shows that h-PhC can simultaneously enhance the light absorption and emission of MoS$_{2}$ and enhance the photoluminescence spectrum of MoS$_{2}$ by 2-3 orders of magnitude.