Optimizing the performance of metal-semiconductor-metal photodetectors by embedding nanoparticles in the absorption layer

摘要

Metal-Semiconductor-Metal is one of the photodetectors that uses in optical detection. The characteristic of these detectors is improved by Plasmonic Science. Some of these characteristics include higher sensitivity, greater efficiency and improved optical absorption coefficient. Our predictions and the numerical results show high absorption in plasma-based combination of Metal-Semiconductor-Metal photodetectors in embedded Nano-grating and Metallic nanoparticles. The results of the simulation using FDTD simulation software shows that by optimizing the Nano grating metal parameters and embedded metallic nanoparticles, higher electric field is obtained, leading to higher absorption compared with the conventional Metal- Semiconductor-Metal detector. This higher absorption is because of the higher ability of embedded metallic nanoparticles in absorbing the light and scattering properties by conduction electrons via stimulated resonance light from metallic nanoparticles.