| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications III
|
| Presentation Title |
Computational Simulation on Irradiation Damage in GaAs-Based Betavoltaic Batteries |
| Author(s) |
Thaneshwor Kaloni, J Patel, E Brian, Edmanuel Torres |
| On-Site Speaker (Planned) |
Thaneshwor Kaloni |
| Abstract Scope |
Betavoltaic (BV) batteries harness the energy provided by beta-particle emitting radioisotopes and transform it into electrical power. However, BV device performance degrades due to the accumulation of radiation damage in the crystal structure. The accumulation of damage over an extended period leads to the degradation of power density. In this work, the radiation damage in the GaAs system was modeled using molecular dynamics simulations of collision cascades for various primary knock-on atom (PKA) energies in the range from 2 to 18 keV. In all cases examined here, the damage was larger when the PKA was an As atom and the extent of the damaged volume increased with increasing the PKA energy. Our study characterizes radiation damage in GaAs at PKA energies higher than 2 keV to cover the whole spectrum of tritium beta particles. This study can help to select the next-generation materials to be integrated into BV devices. |
| Proceedings Inclusion? |
Planned: |