Laser Manufactured Nano-MXenes with Tailored Halogen Terminations Enable Interfacial Ionic Stabilization of High Performance Perovskite Solar Cells

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

20 Scopus Citations
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Author(s)

  • Pengfei Guo
  • Chen Liu
  • Zhiguo Chen
  • Hongfu Zhu
  • Liguo Zhu
  • Xiuhai Zhang
  • Wenhao Zhao
  • Ning Jia
  • Qian Ye
  • Xiaosa Xu
  • Ruihao Chen
  • Zhe Liu
  • Xiaoli Fan
  • Hongqiang Wang

Detail(s)

Original languageEnglish
Article number2202395
Journal / PublicationAdvanced Energy Materials
Volume12
Issue number46
Online published17 Oct 2022
Publication statusPublished - 8 Dec 2022

Abstract

Formamidinium (FA)-based perovskite promises high power conversion efficiency in photovoltaics while it faces awkward spontaneous yellow phase transition even at ambient conditions. This has spurred intensive efforts which leave a formidable challenge on robust anchoring of the soft perovskite lattice. Present work pioneers the rational design of interfacial ionic-bonding between halogen-terminated nano-MXenes and perovskite for effective retarding of the lattice instability in FA-based perovskites. The robust heterointerface between perovskite and nano-MXenes results also in effectively modulating the deep-energy-level defects, lowering the interfacial charge transfer barrier, and tuning the work function of perovskite films. Benefiting from these merits, unencapsulated FA-based perovskite solar cells after the ionic stabilization (champion efficiency up to 24.17%), maintain over 90% of their initial efficiency after operation at maximum power point under continuous illumination for 1000 h, and retain more than 85% of their initial efficiency even after annealing for 1000 h at 85 °C in inert atmosphere.

Research Area(s)

  • carrier dynamics, heterointerfaces, ionic anchoring, nano-MXenes, perovskite solar cells

Citation Format(s)

Laser Manufactured Nano-MXenes with Tailored Halogen Terminations Enable Interfacial Ionic Stabilization of High Performance Perovskite Solar Cells. / Guo, Pengfei; Liu, Chen; Li, Xinliang et al.
In: Advanced Energy Materials, Vol. 12, No. 46, 2202395, 08.12.2022.

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