GEOMETRICAL AND DESIGN ANALYSIS OF BETAVOLTAIC BATTERY USING P-N JUNCTION SILICON SEMICONDUCTOR AND RADIATED BY TRITIUM

• Main Author: Pahlevi, Rheza
• Format: Final Project
• Language: Indonesia
• Subjects: Fisika
• Online Access: https://digilib.itb.ac.id/gdl/view/41213
• Institution: Institut Teknologi Bandung

Nuclear Battery is an alternative energy source which have long life operation time. Betavoltaic battery is one of nuclear battery type. Tritium is one of the most commonly used radioisotope in betavoltaic battery and silicon is one of the most commonly used semiconductor in betavoltaic battery. Betavoltaic battery have small efficiency. Ineffective design and geometry in betavoltaic can reduce efficiency. Therefore, geometrical of silicon and tritium must be calculated as well as battery design to improve interaction between beta particle and semiconductor atom. Monte Carlo method is one of the most commonly used to calculate the performance of betavoltaic battery. Deposited energy in silicon from beta particle can be simulated by MCNP software. There are some semiconductor parameters which used in current density calculation like diffusion lenght, surface recombination velocity and diffusion coefficient has been calculated as a function of dopant. Radioisotope parameter achieved from datasheet. Short circuit current and open circuit voltage calculated using minority carrier diffusion equation, which is using parameters achieved from previous calculation. Then, the battery performance can be simulated using J-V characteristic curve, power density curve, fill factor and efficiency of the battery.