Foldable Hole-Transporting Materials for Merging Electronic States between Defective and Perfect Perovskite Sites

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

11 Scopus Citations
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Author(s)

  • Jianxing Xia
  • Povilas Luizys
  • Maryte Daskeviciene
  • Chuanxiao Xiao
  • Kristina Kantminiene
  • And 18 others
  • Vygintas Jankauskas
  • Kasparas Rakstys
  • Gediminas Kreiza
  • Xiao-Xin Gao
  • Hiroyuki Kanda
  • Keith Gregory Brooks
  • Imanah Rafieh Alwani
  • Qurat Ul Ain
  • Jihua Zou
  • Guang Shao
  • Ruiyuan Hu
  • Zeliang Qiu
  • Andre Slonopas
  • Abdullah M. Asiri
  • Yi Zhang
  • Paul J. Dyson
  • Vytautas Getautis
  • Mohammad Khaja Nazeeruddin

Detail(s)

Original languageEnglish
Article number2300720
Journal / PublicationAdvanced Materials
Volume35
Issue number26
Online published29 Apr 2023
Publication statusPublished - 22 Jun 2023
Externally publishedYes

Link(s)

Abstract

Defective and perfect sites naturally exist within electronic semiconductors, and considerable efforts to reduce defects to improve the performance of electronic devices, especially in hybrid organic–inorganic perovskites (ABX3), are undertaken. Herein, foldable hole-transporting materials (HTMs) are developed, and they extend the wavefunctions of A-site cations of perovskite, which, as hybridized electronic states, link the trap states (defective site) and valence band edge (perfect site) between the naturally defective and perfect sites of the perovskite surface, finally converting the discrete trap states of the perovskite as the continuous valence band to reduce trap recombination. Tailoring the foldability of the HTMs tunes the wavefunctions between defective and perfect surface sites, allowing the power conversion efficiency of a small cell to reach 23.22% and that of a mini-module (6.5 × 7 cm, active area = 30.24 cm2) to reach as high as 21.71% with a fill factor of 81%, the highest value reported for non-spiro-OMeTAD-based perovskite solar modules. © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Research Area(s)

  • hole mobility, hole-transporting materials, perovskite solar cells, photovoltaics, trap states

Citation Format(s)

Foldable Hole-Transporting Materials for Merging Electronic States between Defective and Perfect Perovskite Sites. / Xia, Jianxing; Luizys, Povilas; Daskeviciene, Maryte et al.
In: Advanced Materials, Vol. 35, No. 26, 2300720, 22.06.2023.

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

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