Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation
19 p.
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2017
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sg-ntu-dr.10356-863122020-09-26T21:42:01Z Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation Cortecchia, Daniele Neutzner, Stefanie Srimath Kandada, Ajay Ram Mosconi, Edoardo Meggiolaro, Daniele De Angelis, Filippo Soci, Cesare Petrozza, Annamaria Interdisciplinary Graduate School (IGS) School of Physical and Mathematical Sciences Energy Research Institute @NTU Structural deformation Broadband emission 19 p. 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. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2017-10-31T09:00:37Z 2019-12-06T16:20:11Z 2017-10-31T09:00:37Z 2019-12-06T16:20:11Z 2016 Journal Article 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. 0002-7863 https://hdl.handle.net/10356/86312 http://hdl.handle.net/10220/43965 10.1021/jacs.6b10390 en Journal of the American Chemical Society © 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: [http://dx.doi.org/10.1021/jacs.6b10390]. application/pdf |
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Nanyang Technological University |
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NTU Library |
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Singapore |
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DR-NTU |
| language |
English |
| topic |
Structural deformation Broadband emission |
| spellingShingle |
Structural deformation Broadband emission Cortecchia, Daniele Neutzner, Stefanie Srimath Kandada, Ajay Ram Mosconi, Edoardo Meggiolaro, Daniele De Angelis, Filippo Soci, Cesare Petrozza, Annamaria Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| description |
19 p. |
| author2 |
Interdisciplinary Graduate School (IGS) |
| author_facet |
Interdisciplinary Graduate School (IGS) Cortecchia, Daniele Neutzner, Stefanie Srimath Kandada, Ajay Ram Mosconi, Edoardo Meggiolaro, Daniele De Angelis, Filippo Soci, Cesare Petrozza, Annamaria |
| format |
Article |
| author |
Cortecchia, Daniele Neutzner, Stefanie Srimath Kandada, Ajay Ram Mosconi, Edoardo Meggiolaro, Daniele De Angelis, Filippo Soci, Cesare Petrozza, Annamaria |
| author_sort |
Cortecchia, Daniele |
| title |
Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| title_short |
Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| title_full |
Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| title_fullStr |
Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| title_full_unstemmed |
Broadband Emission in Two-Dimensional Hybrid Perovskites: The Role of Structural Deformation |
| title_sort |
broadband emission in two-dimensional hybrid perovskites: the role of structural deformation |
| publishDate |
2017 |
| url |
https://hdl.handle.net/10356/86312 http://hdl.handle.net/10220/43965 |
| _version_ |
1681056497720623104 |