Simulations about self-absorption of tritium in titanium tritide and the energy deposition in a silicon Schottky barrier diode

Simulations on the self-absorption of tritium electrons in titanium tritide films and the energy deposition in a silicon Schottky barrier diode are carried out using the Geant4 radiation transport toolkit. Energy consumed in each part of the Schottky radiovoltaic battery is simulated to give a clue about how to make the battery work better. The power and energy-conversion efficiency of the tritium silicon Schottky radiovoltaic battery in an optimized design are simulated. Good consistency with experiments is obtained.

► Simulation of the energy conversion inside the radiovoltaic battery is carried out.
► Energy-conversion efficiency in the simulation shows good consistency with experimental result.
► Inadequacy of the present configuration is studied in this work and improvements are proposed.