Phenylalkylammonium passivation enables perovskite light emitting diodes with record high-radiance operational lifetime: the chain length matters

Yuwei Guo; Sofia Apergi; Nan Li; Mengyu Chen; Chunyang Yin; Zhongcheng Yuan; Feng Gao; Fangyan Xie; Geert Brocks; Shuxia Tao; Ni Zhao

doi:10.1038/s41467-021-20970-6

Nature Communications (Jan 2021)

Phenylalkylammonium passivation enables perovskite light emitting diodes with record high-radiance operational lifetime: the chain length matters

Yuwei Guo,
Sofia Apergi,
Nan Li,
Mengyu Chen,
Chunyang Yin,
Zhongcheng Yuan,
Feng Gao,
Fangyan Xie,
Geert Brocks,
Shuxia Tao,
Ni Zhao

Affiliations

Yuwei Guo: Department of Electronic Engineering, The Chinese University of Hong Kong
Sofia Apergi: Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology
Nan Li: Department of Electronic Engineering, The Chinese University of Hong Kong
Mengyu Chen: Department of Electronic Engineering, The Chinese University of Hong Kong
Chunyang Yin: Biomolecular and Organic Electronics, Linköping University
Zhongcheng Yuan: Biomolecular and Organic Electronics, Linköping University
Feng Gao: Biomolecular and Organic Electronics, Linköping University
Fangyan Xie: Instrumental Analysis and Research Centre, Sun Yat-sen University
Geert Brocks: Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology
Shuxia Tao: Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology
Ni Zhao: Department of Electronic Engineering, The Chinese University of Hong Kong

DOI: https://doi.org/10.1038/s41467-021-20970-6
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 8

Abstract

Read online

Perovskite light emitting diodes suffer from operational stability, showing rapid decay of performance within minutes to hours after turn-on. Here, the authors investigate how the steric and Coulomb interaction of ammonium passivation molecules with varying alkyl chain length can improve device stability by suppressing iodide ion migration.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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