Interfacial crosslinking benzimidazolium enables eco-friendly inverted perovskite solar cells and modules

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

2 Scopus Citations
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Author(s)

  • Zhiyuan Dai
  • Yang Yang
  • Xiaofeng Huang
  • Shuyuan Wan
  • Li Yuan
  • And 6 others
  • Hang Wei
  • Siqing Nie
  • Zhe Liu
  • Yongzhen Wu
  • Ruihao Chen
  • Hongqiang Wang

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number110190
Journal / PublicationNano Energy
Volume131
Issue numberPart A
Online published29 Aug 2024
Publication statusPublished - 1 Dec 2024

Abstract

Interfacial engineering via controlled crosslinking at perovskite surface is of significance to address the interfacial loss in inverted perovskite solar cells (PSCs), while is unfortunately impeded by the unsatisfied interfacial charge extraction and transfer owing to the inherent low conductivity of the formed crosslinked network. We herein propose and validate a strategy of interfacial crosslinking benzimidazolium (ICB) that is capable of reducing the surface residual strain of perovskite and improving the interfacial carrier transfer, leading to a new benchmark of power conversion efficiency (PCE) up to 25.30 % in inverted PSCs, as well as 21.73 % in inverted PSC modules (6 × 6 cm²). Such the ICB network also results in sustainable PSCs and modules with superior stability even under various harsh conditions, e.g. suppressing lead leakage of PSCs with the rate of 83.6 %, maintaining the initial efficiency of 90 % after 1200 h of continuous heating at 85 °C, and 92.8 % of its pristine efficiency over 1200 h of continuous irradiation. We thus believe that present work demonstrates the potential of ionic molecules crosslinking at interfaces for high performance inverted PSCs. © 2024 Elsevier Ltd.

Research Area(s)

  • Conductive-passivation, Interface engineering, Inverted perovskite solar cells and modules, Ionic crosslinking, Lead leakage inhibition

Citation Format(s)

Interfacial crosslinking benzimidazolium enables eco-friendly inverted perovskite solar cells and modules. / Dai, Zhiyuan; Yang, Yang; Huang, Xiaofeng et al.
In: Nano Energy, Vol. 131, No. Part A, 110190, 01.12.2024.

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