Radiation Hardness and Self-Healing of Perovskite Solar Cells

Felix Lang, Norbert H. Nickel, Jürgen Bundesmann, Sophie Seidel, Andrea Denker, Steve Albrecht, Victor V. Brus, Jörg Rappich, Bernd Rech, Giovanni Landi, Heinrich C. Neitzert

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)

Abstract

Inverted perovskite solar cells with a layer sequence of glass/ITO/PEDOT:PSS/CH3NH3 PbI3/PCBM/BCP/Ag was fabricated. The solar cells had a stabilized power conversion efficiency of n=12.1%. The devices were irradiated with 68 MeV protons until a total dose of 1.02 x 1013p cm-2 was reached. During the irradiation experiments J?V curves were measured every 30s. A decrease of current density by 10% and 40% was observed for a proton dose of θ1012 and 1013p cm-2, respectively. However, when the data are corrected for deleterious effects, such as the photodegradation of the perovskite layer as measured on a reference, the decrease of current density amounts to only 20%. A degradation of VOC and the fill factor is not observed. Moreover, when the proton irradiation is terminated a self-healing process of the perovskite commences and current density recovers. After 10 d VOC and the fill factor were significantly enhanced compared to the reference devices.

Original languageEnglish
Pages (from-to)8726-8731
Number of pages6
JournalAdvanced Materials
Volume28
Issue number39
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • degradation
  • perovskite solar cells
  • proton irradiation
  • radiation hardness
  • self-healing

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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