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Title: Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation
Authors: Cortecchia, Daniele
Neutzner, Stefanie
Srimath Kandada, Ajay Ram
Mosconi, Edoardo
Meggiolaro, Daniele
De Angelis, Filippo
Soci, Cesare
Petrozza, Annamaria
Keywords: Structural deformation
Broadband emission
Issue Date: 2016
Source: Cortecchia, D., Neutzner, S., Srimath Kandada, A. R., Mosconi, E., Meggiolaro, D., De Angelis, F., et al. (2017). Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation. Journal of the American Chemical Society, 139(1), 39-42.
Series/Report no.: Journal of the American Chemical Society
Abstract: Only a selected group of two-dimensional (2D) lead–halide perovskites shows a peculiar broad-band photoluminescence. Here we show that the structural distortions of the perovskite lattice can determine the defectivity of the material by modulating the defect formation energies. By selecting and comparing two archetype systems, namely, (NBT)2PbI4 and (EDBE)PbI4 perovskites (NBT = n-butylammonium and EDBE = 2,2-(ethylenedioxy)bis(ethylammonium)), we find that only the latter, subject to larger deformation of the Pb–X bond length and X–Pb–X bond angles, sees the formation of VF color centers whose radiative decay ultimately leads to broadened PL. These findings highlight the importance of structural engineering to control the optoelectronic properties of this class of soft materials.
Description: 19 p.
ISSN: 0002-7863
DOI: 10.1021/jacs.6b10390
Rights: © 2016 American Chemical Society (ACS). This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of the American Chemical Society, ACS. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles
IGS Journal Articles
SPMS Journal Articles

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