The inverse problem of activating a heterojunction converter

Abstract

A mathematical model is presented and optimization of a betavoltaic element with a silicon carbide film activated by the carbon-14 isotope is carried out. Special attention is paid to differential equations describing non-equilibrium injection processes and the dynamics of current densities in the SiC/Si heterojunction. By solving a system of equations, it was possible to determine the dependences of the parameters on the specific activity and distribution of isotopes. Optimization has led to an increase in the efficiency and specific power of the element.