Features of multicrystalline transport of electrons of colloidal quantum points of InSb and PbS

On samples in the structure of a multi-grained layer of colloidal quantum dots of narrow-gap semiconductors of indium antimonide and lead sulfide, electrons are transported in intergranular nanogaps during current flow by thermal emission from quantum dots without a shell and tunnel emission from quantum dots with a shell. Electrons are injected into quantum dots by tunneling emission and flight through the shell. For the variant without a shell, the current is limited by space charge, similar to the Coulomb blockade. The results are discussed using the streamline model across the layer. According to the characteristics, it is calculated that there are 100-200 quantum dots in the streamlines.