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Multifunctional Spacer in 2D/3D Wide-Bandgap Perovskite for Monolithic Perovskite/Silicon Tandem Solar Cells

  • Yi-an Ding
  • , Xin Yang
  • , Xiaoting Wang
  • , Yuanzhong Liu
  • , Yiran Yan
  • , Xiangrong Zhu
  • , Jin Huang
  • , Liyou Yang
  • , Lina Li
  • , Qiang Fu*
  • , Linfeng Lu*
  • , Xiaofei Ji*
  • *Corresponding author for this work

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

Abstract

To maximize the power conversion efficiency (PCE) and stability of perovskite/silicon tandem solar cells (TSCs), high-performance and stable perovskite top cells with wide-bandgaps are required. A 2D/3D wide-bandgap perovskite with a bandgap of 1.69 eV using 1H-1,2,4-triazole-1-carboximidamide (1-TzFACl) as a spacer is developed. The 2D/3D wide-bandgap perovskite shows better film quality, enhanced crystallinity, suppressed nonradiative recombination, and significantly improved phase stability. Its initial PCE (21.58%) remains above 87% after 1560 h of continuous illumination due to the insertion of Cl in the perovskite lattice. A monolithic two-terminal perovskite/silicon TSC achieves a PCE of 25.66% with high light stability. This work provides an ingenious strategy to restrain the phase segregation in wide-bandgap perovskites, leading to effective and stable perovskite/silicon TSCs. © 2024 Wiley-VCH GmbH. © 2024 Wiley-VCH GmbH
Original languageEnglish
Article number2400189
JournalSolar RRL
Volume8
Issue number11
Online published7 Apr 2024
DOIs
Publication statusPublished - Jun 2024

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • 2D/3D perovskite
  • defect passivation
  • perovskite/silicon tandem solar cells
  • stability
  • wide-bandgap perovskite

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