MANAGED SYNTHESIS OF A NANOSTRUCTURED TWO-DIMENSIONAL ATOMIC CRYSTAL OF BISMUTH SELENID

The paper analyzes the literature of modern methods for producing nanosuspensions and the orderly growth of nanofilms. A new method for the controlled synthesis of a high-quality nanostructured two­ dimensional atomic crystal of bismuth selenide is discussed. Using the “gas-solid” growth mechanism, the influence of such factors as temperature, gas supply rate on the controlled growth of a nanostructured two-dimensional atomic crystal of bismuth selenide 8 pm in length and 5 nm thick on mica having a lattice similar to copper taken as a matrix was investigated. It is shown that the optimal conditions for conducting controlled synthesis of high-quality bismuth selenide are 4900, time 40 minutes, gas flow rate within 30 cm³/s ÷ 80 cm³/s. The structural characteristics of the obtained samples of bismuth selenide were studied by modern methods of atomic force microscopy (Bruker Atomic Force Microscope, AFM, USA), scanning electron microscopy (SEM, Hitachi S-4800, Japan), optical microscopy (Olimpus, DX-51, Japan), Raman spectroscopy (HORIBA LabRAM HR 800, USA), UV-VIS, transmission electron microscopy (TEM). The forms and properties of the synthesized samples of nanostructured atomic crystals of bismuth selenide are

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