A Model for Ni-63 Source for Betavoltaic Application |
| A. Belghachia, K. Bozkurtb, H. Moughlia, O. Özdemirb, B. Amiria, A. Talhia
aLaboratory of Semiconductor Devices Physics (LPDS), University of Bechar, Bechar 08000, Algeria bYildiz Technical University, Davutpasa Campus, Science and Arts Faculty, Physics Department, 34220 Esenler Istanbul, Turkey |
| Received: July 15, 2019; revised version November 25, 2019; in final form January 10, 2020 |
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| A mathematical model of Ni-63 source for betavoltaic batteries is presented, based on the Monte Carlo calculation. Trajectories of beta particles are simulated in Ni-63 source until their escape or total energy dissipation. Analysis of the effect of physical and technological factors on the performance of a source is carried out. Special attention is given to self-absorption and substrate backscattering because of their impact on power emission. Addition of a protective layer diminishes the source emission because of further absorption. The model has been tested successfully for Ni-63/GaN structure. |
DOI:10.12693/APhysPolA.137.324 topics: betavoltaic, radioactive source, Monte Carlo simulation, GaN |