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Analysis of Black Phosphorus Terahertz Photoconductive Antenna

This paper presents a parametric analysis of a photoconductive antenna that implements the 2-D material black phosphorus (BP). This material fills the gap between the electrodes of the antenna. The study involves modeling and simulation of the device using COMSOL Multiphysics at different bias voltages. We present the calculations of the photocurrent density versus time at the center of the gap in the BP layer, and the maximum photocurrent density value measured over time for multiple bias voltages. The results showed a saturation behavior versus bias voltage.