A 4H–SiC betavoltaic battery based on a ^(63)Ni source
A 4H–SiC betavoltaic battery based on a ^(63)Ni source作者机构：College of PhysicsJilin University
出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)
年 卷 期：2018年第29卷第11期
页 面：295-303页
核心收录：
基 金：supported by the National Major Scientific Instruments and Equipment Development Project(No.2012YQ240121) the National Natural Science Foundation of China(No.11075064)
主 题：4H–SiC–63Ni betavoltaic battery p–n junction Energy conversion efficiency
摘 要：A 4H–SiC–^(63)Ni p–n-junction-based betavoltaic battery is investigated. The Monte Carlo method is used to simulate the self-absorption effect of the ^(63)Ni source, the backscattering process, and the transport of beta particles in 4H–SiC material. The main factors that affect the energy conversion efficiencies of the cell are analyzed. Based on the simulation results, it can be calculated that, when the thickness of the ^(63)Ni source increases from 2 ×10^(-3) to10 lm, the theoretical maximum device conversion efficiency increases from 16.77 to 23:51% and the total conversion efficiency decreases from 16.73 to 1:48%.Furthermore, a feasible design with a maximum output power density of 0:36 μW=cm^2 and an optimal device conversion efficiency of 23:5% is obtained.
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