Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143499
Title: Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin
Authors: Febriansyah, Benny
Borzda, Tetiana
Cortecchia, Daniele
Neutzner, Stefanie
Folpini, Giulia
Koh, Teck Ming
Li, Yongxin
Mathews, Nripan
Petrozza, Annamaria
England, Jason
Keywords: Science::Chemistry::Inorganic chemistry
Science::Physics
Issue Date: 2020
Source: Febriansyah, B., Borzda, T., Cortecchia, D., Neutzner, S., Folpini, G., Koh, T. M., ... England, J. (2020). Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin. Angewandte Chemie, 59(27), 10791-10796. doi:10.1002/ange.201915708
Journal: Angewandte Chemie
Abstract: Published studies of layered (2D) (100)‐oriented hybrid lead‐bromide perovskites evidence a correlation between increased inter‐octahedral (Pb‐Br‐Pb) distortions and the appearance of broadband white light emission. However, the impact of distortions within their constituent [PbBr6]4− octahedra has yet to be assessed. Herein, we report two new (100)‐oriented 2D Pb‐Br perovskites, whose structures display unusually high intra‐octahedral distortions, whilst retaining minimal inter‐octahedral distortions. Using a combination of temperature‐dependent, power‐dependent and time‐resolved photoluminescence spectroscopic measurements, we show that increased intra‐octahedral distortion induces exciton localization processes and leads to formation of multiple photoinduced emissive colour centres. Ultimately, this leads to highly Stokes‐shifted, ultrabroad white light emission at room temperature.
URI: https://hdl.handle.net/10356/143499
ISSN: 0044-8249
DOI: 10.1002/ange.201915708
Rights: This is the accepted version of the following article:Febriansyah, B., Borzda, T., Cortecchia, D., Neutzner, S., Folpini, G., Koh, T. M., ... England, J. (2020). Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin. Angewandte Chemie, 59(27), 10791-10796. doi:10.1002/ange.201915708, which has been published in final form at 10.1002/ange.201915708. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: embargo_20210703
Fulltext Availability: With Fulltext
Appears in Collections:IGS Journal Articles

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