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Design and simulation of betavoltaic battery using large-grain polysilicon

Authors
Publisher
Elsevier Ltd
Volume
70
Issue
10
Identifiers
DOI: 10.1016/j.apradiso.2012.06.009
Keywords
  • Large-Grain Polysilicon
  • Betavoltaic Battery
  • Radioisotope Ni63
  • Monte Carlo Simulation
Disciplines
  • Design

Abstract

Abstract In this paper, we present the design and simulation of a p–n junction betavoltaic battery based on large-grain polysilicon. By the Monte Carlo simulation, the average penetration depth were obtained, according to which the optimal depletion region width was designed. The carriers transport model of large-grain polysilicon is used to determine the diffusion length of minority carrier. By optimizing the doping concentration, the maximum power conversion efficiency can be achieved to be 0.90% with a 10mCi/cm2 Ni-63 source radiation.

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