Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Cheng Liu
  • Yi Yang
  • Kasparas Rakstys
  • Arup Mahata
  • Marius Franckevicius
  • And 17 others
  • Edoardo Mosconi
  • Raminta Skackauskaite
  • Bin Ding
  • Keith G. Brooks
  • Onovbaramwen Jennifer Usiobo
  • Jean-Nicolas Audinot
  • Hiroyuki Kanda
  • Simonas Driukas
  • Gabriele Kavaliauskaite
  • Vidmantas Gulbinas
  • Marc Dessimoz
  • Vytautas Getautis
  • Filippo De Angelis
  • Yong Ding
  • Songyuan Dai
  • Paul J. Dyson
  • Mohammad Khaja Nazeeruddin

Detail(s)

Original languageEnglish
Article number6394
Journal / PublicationNature Communications
Volume12
Online published4 Nov 2021
Publication statusPublished - Dec 2021

Link(s)

Abstract

Organic halide salt passivation is considered to be an essential strategy to reduce defects in state-of-the-art perovskite solar cells (PSCs). This strategy, however, suffers from the inevitable formation of in-plane favored two-dimensional (2D) perovskite layers with impaired charge transport, especially under thermal conditions, impeding photovoltaic performance and device scale-up. To overcome this limitation, we studied the energy barrier of 2D perovskite formation from ortho-, meta- and para-isomers of (phenylene)di(ethylammonium) iodide (PDEAI2) that were designed for tailored defect passivation. Treatment with the most sterically hindered ortho-isomer not only prevents the formation of surficial 2D perovskite film, even at elevated temperatures, but also maximizes the passivation effect on both shallow- and deep-level defects. The ensuing PSCs achieve an efficiency of 23.9% with long-term operational stability (over 1000 h). Importantly, a record efficiency of 21.4% for the perovskite module with an active area of 26 cm2 was achieved.

Research Area(s)

Citation Format(s)

Tuning structural isomers of phenylenediammonium to afford efficient and stable perovskite solar cells and modules. / Liu, Cheng; Yang, Yi; Rakstys, Kasparas et al.
In: Nature Communications, Vol. 12, 6394, 12.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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