Approaching multi-band and broadband high absorption based on one-dimensional layered structures containing monolayer MoS 2

Abstract MoS 2 has attracted considerable attention owing to its unusual and intriguing potential applications in optoelectronic devices. In this study, the absorption properties of a simple one-dimensional (1D) layered structure composed of monolayer MoS 2 are analyzed by transfer matrix method. The dielectric permittivity of monolayer MoS 2 is employed using the Lorentz model. The influences contributed to the period of the structure and the incident angle are numerically investigated. Our results indicate that a tunable multi-band (broadband) absorber can be achieved by using such a 1D layered structure. A multi-band (broadband) absorption phenomenon can be obtained by increasing the period of the structure. Furthermore, the absorption peaks and broadband absorptance spectra have blue-shifted as the incident angle increases.