Water- and heat-activated dynamic passivation for perovskite photovoltaics

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

14 Scopus Citations
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Author(s)

  • Philippe Holzhey
  • Ning Zhou
  • Qiang Zhang
  • Suer Zhou
  • Elisabeth A. Duijnstee
  • Kevin J. Rietwyk
  • Jeng-Yu Lin
  • Yijie Mu
  • Yanfeng Zhang
  • Udo Bach
  • Chun-Guey Wu
  • Henry J. Snaith

Detail(s)

Original languageEnglish
Pages (from-to)294-300
Journal / PublicationNature
Volume632
Issue number8024
Online published24 Jun 2024
Publication statusPublished - 8 Aug 2024

Link(s)

Abstract

Further improvements in perovskite solar cells require better control of ionic defects in the perovskite photoactive layer during the manufacturing stage and their usage1–5 . Here we report a living passivation strategy using a hindered urea/thiocarbamate bond6–8 Lewis acid–base material (HUBLA), where dynamic covalent bonds with water and heat-activated characteristics can dynamically heal the perovskite to ensure device performance and stability. Upon exposure to moisture or heat, HUBLA generates new agents and further passivates defects in the perovskite. This passivation strategy achieved high-performance devices with a power conversion efficiency (PCE) of 25.1 per cent. HUBLA devices retained 94 per cent of their initial PCE for approximately 1,500 hours of ageing at 85 degrees Celsius in nitrogen and maintained 88 per cent of their initial PCE after 1,000 hours of ageing at 85 degrees Celsius and 30 per cent relative humidity in air. © The Author(s) 2024.

Citation Format(s)

Water- and heat-activated dynamic passivation for perovskite photovoltaics. / Wang, Wei-Ting; Holzhey, Philippe; Zhou, Ning et al.
In: Nature, Vol. 632, No. 8024, 08.08.2024, p. 294-300.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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