Abstract
The structural, electronic, optical properties and photogalvanic effect of MoSSe/Si9C15 and Si9C15/MoSSe heterostructures are investigated utilizing density functional theory. Band gaps of 1.70 eV and 1.03 eV are respectively exhibited by these heterostructures, both classified as direct bandgap semiconductors. The thermal stability of the MoSSe/Si9C15 and Si9C15/MoSSe heterostructures is demonstrated through ab initio molecular dynamics calculations. A hole mobility of 62774 cm2/Vs in the zigzag direction and an electron mobility of 1248 cm2/Vs in the armchair direction are recorded for the MoSSe/Si9C15 heterostructure. Light absorption in both the ultraviolet and visible light regions is observed for these heterostructures. Upon construction of a self-powered MoSSe/Si9C15 photodetector, a peak photocurrent (Jph) of 10.76 a02/photon is achieved, influenced by changes in polarization angle θ and photon energy, and a maximum extinction ratio of 26.7 is reached, showcasing high polarization sensitivity.
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