The application discloses an adaptive
encryption method based on
resonance tunneling
diode current-
voltage simulation, which comprises the following steps: solving a Schrodinger-Poisson model by utilizing a fourth-order compact difference format
coupling on an initial grid; calculating an
encryption indicator of each subinterval on an existing grid, and encrypting the grid according to an
encryption strategy until a predetermined grid encryption requirement is met, so that a final calculation grid is obtained; solving the Schrodinger-Poisson model by utilizing the compact difference format
coupling on the obtained local encryption grid, and then obtaining convergent
electron density and
potential energy function; and calculating a
current density according to a Tsu-Esaki formula within a specified bias range, constructing a current-
voltage characteristic curve through a numerical analysis tool, and realizing
simulation of a negative differential resistance effect. While ensuring the solution accuracy of physical quantities such as
electron density and
current density, the application effectively controls the size of the grid, significantly reduces the calculation amount, and greatly improves the calculation efficiency.