A compact numerical model for photodetectors made from two-dimensional materials

This work presents a numerical investigation into the performance metrics of photodetectors made from monolayer MoS2, a two-dimensional material with unique optoelectronic properties. The study introduces a one-dimensional drift-diffusion framework and wave propagation in layered media analysis. Results demonstrate a peak quantum efficiency at 561 nm, influenced by the substrate. The precision of the model validates its utility for characterizing MoS2 photodetectors, emphasizing the importance of background inclusion in calculations. The efficiency of the computation makes the model suitable for in-depth device analyses and device design via numerical optimization.