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Graphene-like molybdenum disulfide and its application in optoelectronic devices

wallpapers News 2021-11-23
Graphene-like molybdenum disulfide and its application in optoelectronic devices
graphene-like MoS2 composed of a single layer or several layers of molybdenum disulfide (graphene-like MoS2) is a new two-dimensional (2D) layered compound with similar graphene structure and properties. Physical and chemical properties have become emerging research hotspots. This article reviews several common preparation methods of graphene-like molybdenum disulfide in recent years, including micromechanical force exfoliation, lithium-ion intercalation, and liquid-phase ultrasound." The top-down peeling method and the bottom-up synthesis method based on high-temperature thermal decomposition and hydrothermal methods; introduced its commonly used structural characterization methods, including atomic force microscopy (AFM), scanning electron microscopy (SEM), Transmission Electron Microscopy (TEM), and Raman spectroscopy, etc.; summarize the basic photophysical properties and related mechanisms of graphene-like molybdenum disulfide, such as ultraviolet-visible (UV-Vis) absorption and fluorescence emission, and related mechanisms; summarized The application principle and research progress of graphene-like molybdenum disulfide in secondary batteries, field-effect transistors, sensors, organic electroluminescent diodes, and electrical storage and other optoelectronic devices, and the research prospects of such new two-dimensional layered compounds have prospected.
Due to its unique microstructure and physical and chemical properties, graphene-like molybdenum disulfide can overcome the shortcomings of zero-band gap graphene while still having many advantages of graphene. Luminescence, electrical storage, and many other fields have broad application prospects. However, improving the preparation method and optimization of graphene-like molybdenum disulfide, and improving the corresponding device structure, performance has become a key bottleneck hindering its commercialization process and industrialization development. This paper takes graphene-like molybdenum disulfide as the research object, starting from the improvement of its preparation method, focusing on the application of graphene-like molybdenum disulfide in organic electroluminescent diodes and electrical storage optoelectronic devices and the corresponding device structure and The performance has been optimized and improved. This article reviews several common preparation methods of graphene-like molybdenum disulfide in recent years, including micromechanical force peeling, lithium-ion intercalation, and liquid-phase ultrasonic methods. "The peeling method", and the "bottom-up" synthesis method based on high-temperature thermal decomposition, hydrothermal method, etc.; introduced its commonly used structural characterization methods, including atomic force microscope, scanning electron microscope, transmission electron microscope and pull Mann spectroscopy, etc.; summarized the basic photophysical properties and related mechanisms of graphene-like molybdenum disulfide, such as ultraviolet absorption and fluorescence emission, and related mechanisms; summarized the use of graphene-like molybdenum disulfide in secondary batteries, field-effect transistors, sensors, and organic luminescence. The application principles and research progress in the field of optoelectronic devices such as diodes and electrical storage, and prospects for the research of such new two-dimensional layered compounds.