| dc.description.abstract | Nanoflakes ultra-thin quantum dots are theoretically studied as innovative nanomaterials
delivering outstanding results in various high fields. In this work, we investigated the surface
properties of an electron confined in spherical ultra-thin quantum dots in the presence of an on-center
or off-center donor impurity. Thus, we have developed a novel model that leads us to investigate
the different nanoflake geometries by changing the spherical nanoflake coordinates (R, a, f). Under
the infinite confinement potential model, the study of these nanostructures is performed within the
effective mass and parabolic band approximations. The resolution of the Schrödinger equation is
accomplished by the finite difference method, which allows obtaining the eigenvalues and wave
functions for an electron confined in the nanoflakes surface. Through the donor and electron energies,
the transport, optoelectronic, and surface properties of the nanostructures were fully discussed
according to their practical significance. Our findings demonstrated that these energies are more
significant in the small nanoflakes area by altering the radius and the polar and azimuthal angles. The
important finding shows that the ground state binding energy depends strongly on the geometry of
the nanoflakes, despite having the same surface. Another interesting result is that the presence of the
off-center shallow donor impurity permits controlling the binding energy, which leads to adjusting
the immense behavior of the curved surface nanostructures. | tr |
