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<p>Solar cells in space are exposed to high-energy particles and ionizing radiation, which aggravate stability and exacerbate lattice defects which are detrimental to performance. A computational analysis of the radiation hardness of kesterite CZTS-based solar cells for their potential application in space is undertaken. We simulated the CZTS degradation under radiation using experimentally reported donor–acceptor defect pairs. Under proton irradiation, the deterioration pattern of CZTS current–voltage characteristics exhibited a significant decrease in short-circuit current (J<sub>SC</sub>) and a slight reduction in open-circuit voltage (V<sub>OC</sub>) with increasing fluence. Performance decay is observed for fluence beyond 10<sup>14</sup> particles/cm<sup>2</sup>. The simulated results provide a qualitative representation of CZTS degradation under 1&#xa0;MeV proton irradiation, highlighting its remarkable radiation resistance. Simulation results substantiate the pragmatic prospects of CZTS space applicability.</p>

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Computational analysis of CZTS solar cells for space applications

  • 期刊论文

  • 发表日期：

    2025年10月9日

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  • L. Vanitha,
  • M. Sugadev,
  • G. Ramkumar,
  • Atul Kumar

摘要

Solar cells in space are exposed to high-energy particles and ionizing radiation, which aggravate stability and exacerbate lattice defects which are detrimental to performance. A computational analysis of the radiation hardness of kesterite CZTS-based solar cells for their potential application in space is undertaken. We simulated the CZTS degradation under radiation using experimentally reported donor–acceptor defect pairs. Under proton irradiation, the deterioration pattern of CZTS current–voltage characteristics exhibited a significant decrease in short-circuit current (JSC) and a slight reduction in open-circuit voltage (VOC) with increasing fluence. Performance decay is observed for fluence beyond 1014 particles/cm2. The simulated results provide a qualitative representation of CZTS degradation under 1 MeV proton irradiation, highlighting its remarkable radiation resistance. Simulation results substantiate the pragmatic prospects of CZTS space applicability.