title: A simple theoretical model for ⁶³Ni betavoltaic battery.
abstract: A numerical simulation of the energy deposition distribution in semiconductors is performed for ⁶³Ni beta particles. Results show that the energy deposition distribution exhibits an approximate exponential decay law. A simple theoretical model is developed for ⁶³Ni betavoltaic battery based on the distribution characteristics. The correctness of the model is validated by two literature experiments. Results show that the theoretical short-circuit current agrees well with the experimental results, and the open-circuit voltage deviates from the experimental results in terms of the influence of the PN junction defects and the simplification of the source. The theoretical model can be applied to ⁶³Ni and ¹⁴⁷Pm betavoltaic batteries.
authors: School of Nuclear Science and Technology, University of South China, Hengyang, China. Electronic address: zuogp@tahoo.com.
authors: Guoping
authors: G
authors: Zuo
authors: Jianliang
authors: J
authors: Zhou
authors: Guotu
authors: G
authors: Ke
keywords: Betavoltaic battery; Nickel-63; Theoretical model