THE NERNST-PLANCK EQUATION OR THE CURRENT-DENSITY EQUATION IN THE CONTEXT OF SEMICONDUCTOR HETEROJUNCTION THEORY

The Nernst-Planck equation or the current density equation in the context of the theory of isotype n-n heterojunctions is discussed. The similarity of the expressions for the current density in isotype heterojunctions derived recently to the Butler-Volmer equation in dynamic electrochemistry is pointed out. Theoretical static current-voltage characteristics of a typical example of an isotype n-n heterojunction are plotted. An approach to the solution of the problem of the coupled Nernst-Planck and Poisson equations for the cases of both, n-n and p-p heterojunctions is also outlined.