Strategies for boosting the performance of MoS2 photodetectors using hybrid heterostructures


The outstanding features of atomic layered MoS2, such as the high optical transparency and carrier mobility, ultrafast photoresponse, and photodetection from the UV to IR, make MoS2 highly desirable for developing broadband photodetectors. However, the low optical absorption by MoS2 atomic layers hinders achieving the high performance of photodetectors; therefore, different strategies have been applied to improve the photoresponse by generating abundant photo-excited carriers. Though the absorption of light by the MoS2 atomic layers is an intrinsic property, the light absorption can be further enhanced in MoS2 hybrid heterostructures by utilizing the supplementary light absorption of secondary integrated components in the hybrid structures. In addition to the incident light absorption, the carrier mobility of MoS2 can be dramatically increased by forming hybrid heterostructures and nanocomposites with a diverse range of inorganic, organic, and polymeric materials to develop MoS2 hybrid heterostructure-based high-performance ultra-broadband photodetectors. The large bandgap and limited absorption of visible light (10%) displayed by monolayer MoS2 hinder the attainment of a high power conversion efficiency, which eventually restricts the application of MoS2 atomic layers in broadband photodetectors. The intrinsic photoresponse of atomic-layered MoS2 is rather constrained; therefore, different strategies have been explored to boost the carrier mobility and optical absorption of MoS2 layers to improve the overall optoelectronic properties maneuvering the electronic band structure. Different strategies such as control of atomic-layer thickness, hybrid heterostructures formation, chemical doping, surface functionalization, strain, and defect engineering have been used to boost the performance of MoS2 photodetectors which are discussed throughout this article. If you are looking for high quality, high purity, and cost-effective Molybdenum disulfide, or if you require the latest price of Molybdenum disulfide, please feel free to email contact mis-asia.

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