Evaluation of Damage Coefficient for Minority-Carrier Diffusion Length of Triple-Cation Perovskite Solar Cells under 1 MeV Electron Irradiation for Space Applications

Yu Miyazawa, Gyu Min Kim, Ayumi Ishii, Masashi Ikegami, Tsutomu Miyasaka, Yudai Suzuki, Tomoyuki Yamamoto, Takeshi Ohshima, Shusaku Kanaya, Hiroyuki Toyota, Kazuyuki Hirose

Research output: Contribution to journalArticlepeer-review

Abstract

Organo-halide perovskite solar cells (PSCs) are lightweight and low cost, and they offer high power conversion efficiencies. PSCs have proven to be useful in terrestrial applications. In addition, they are particularly attractive for space applications because they can offer a higher radiation tolerance than GaAs and Si solar cells. This paper evaluates the damage coefficient for minority-carrier diffusion lengthKLof perovskite crystals after 1 MeV electron irradiation by time-resolved photoluminescence measurements to investigate the reason for their high radiation tolerance. Results show that perovskite crystals have a lower damage coefficientKLthan that of InP crystals with a high radiation tolerance. On the other hand, first-principles calculations indicate that the displacement energy of perovskite crystals is as low as that of Si, which does not have a high radiation tolerance. The present results suggest that the annealing effect occurs for PSCs at room temperature.

Original languageEnglish
Pages (from-to)13131-13137
Number of pages7
JournalJournal of Physical Chemistry C
Volume125
Issue number24
DOIs
Publication statusPublished - 2021 Jun 24

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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