Revealing Excitonic Phonon Coupling in (PEA)(2)(MA)(n-1)PbnI3n+1 2D Layered Perovskites

Joanna M. Urban; Gabriel Chehade; Mateusz Dyksik; Matan Menahem; Alessandro Surrente; Gaelle Trippe-Allard; Duncan K. Maude; Damien Garrot; Omer Yaffe; Emmanuelle Deleporte; Paulina Plochocka; Michal Baranowski

doi:10.1021/acs.jpclett.0c01714

Revealing Excitonic Phonon Coupling in (PEA)(2)(MA)(n-1)PbnI3n+1 2D Layered Perovskites

Joanna M. Urban, Gabriel Chehade, Mateusz Dyksik, Matan Menahem, Alessandro Surrente, Gaelle Trippe-Allard, Duncan K. Maude, Damien Garrot, Omer Yaffe, Emmanuelle Deleporte, Paulina Plochocka^*, Michal Baranowski^*

^*Corresponding author for this work

Department of Molecular Chemistry and Materials Science Perlman

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

The family of 2D Ruddlesden-Popper perovskites is currently attracting great interest of the scientific community as highly promising materials for energy harvesting and light emission applications. Despite the fact that these materials are known for decades, only recently has it become apparent that their optical properties are driven by the exciton-phonon coupling, which is controlled by the organic spacers. However, the detailed mechanism of this coupling, which gives rise to complex absorption and emission spectra, is the subject of ongoing controversy. In this work we show that the particularly rich, absorption spectra of (PEA)(2)(CH3NH3)(n-1)PbnI3n+1 (where PEA stands for phenylethylammonium and n = 1, 2, 3), are related to a vibronic progression of excitonic transition. In contrast to other two-dimensional perovskites, we observe a coupling to a high-energy (40 meV) phonon mode probably related to the torsional motion of the NH3+ head of the organic spacer.

Original language	English
Pages (from-to)	5830-5835
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	11
Issue number	15
Early online date	29 Jun 2020
DOIs	https://doi.org/10.1021/acs.jpclett.0c01714
Publication status	Published - 6 Aug 2020

Funding

M.B. and P.P. appreciates support from National Science Centre Poland within the OPUS program (grant no. 2019/33/B/ST3/01915). This work was partially supported by OPEP project, which received funding from the ANR-10-LABX-0037-NEXT. J.M.U., E.D., G.T.-A., and G.C. have received fundings from the Agence Nationale pour la Recherche, ANR-18-CE24-006 (EMIPERO). M.D. appreciates support from the Polish National Agency for Academic Exchange within the Bekker programme (grant no. PPN/BEK/2019/1/00312/U/00001).

All Science Journal Classification (ASJC) codes

General Materials Science
Physical and Theoretical Chemistry

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10.1021/acs.jpclett.0c01714

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title = "Revealing Excitonic Phonon Coupling in (PEA)(2)(MA)(n-1)PbnI3n+1 2D Layered Perovskites",

abstract = "The family of 2D Ruddlesden-Popper perovskites is currently attracting great interest of the scientific community as highly promising materials for energy harvesting and light emission applications. Despite the fact that these materials are known for decades, only recently has it become apparent that their optical properties are driven by the exciton-phonon coupling, which is controlled by the organic spacers. However, the detailed mechanism of this coupling, which gives rise to complex absorption and emission spectra, is the subject of ongoing controversy. In this work we show that the particularly rich, absorption spectra of (PEA)(2)(CH3NH3)(n-1)PbnI3n+1 (where PEA stands for phenylethylammonium and n = 1, 2, 3), are related to a vibronic progression of excitonic transition. In contrast to other two-dimensional perovskites, we observe a coupling to a high-energy (40 meV) phonon mode probably related to the torsional motion of the NH3+ head of the organic spacer.",

author = "Urban, {Joanna M.} and Gabriel Chehade and Mateusz Dyksik and Matan Menahem and Alessandro Surrente and Gaelle Trippe-Allard and Maude, {Duncan K.} and Damien Garrot and Omer Yaffe and Emmanuelle Deleporte and Paulina Plochocka and Michal Baranowski",

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doi = "10.1021/acs.jpclett.0c01714",

language = "English",

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AU - Urban, Joanna M.

AU - Chehade, Gabriel

AU - Dyksik, Mateusz

AU - Menahem, Matan

AU - Surrente, Alessandro

AU - Trippe-Allard, Gaelle

AU - Maude, Duncan K.

AU - Garrot, Damien

AU - Yaffe, Omer

AU - Deleporte, Emmanuelle

AU - Plochocka, Paulina

AU - Baranowski, Michal

PY - 2020/8/6

Y1 - 2020/8/6

N2 - The family of 2D Ruddlesden-Popper perovskites is currently attracting great interest of the scientific community as highly promising materials for energy harvesting and light emission applications. Despite the fact that these materials are known for decades, only recently has it become apparent that their optical properties are driven by the exciton-phonon coupling, which is controlled by the organic spacers. However, the detailed mechanism of this coupling, which gives rise to complex absorption and emission spectra, is the subject of ongoing controversy. In this work we show that the particularly rich, absorption spectra of (PEA)(2)(CH3NH3)(n-1)PbnI3n+1 (where PEA stands for phenylethylammonium and n = 1, 2, 3), are related to a vibronic progression of excitonic transition. In contrast to other two-dimensional perovskites, we observe a coupling to a high-energy (40 meV) phonon mode probably related to the torsional motion of the NH3+ head of the organic spacer.

AB - The family of 2D Ruddlesden-Popper perovskites is currently attracting great interest of the scientific community as highly promising materials for energy harvesting and light emission applications. Despite the fact that these materials are known for decades, only recently has it become apparent that their optical properties are driven by the exciton-phonon coupling, which is controlled by the organic spacers. However, the detailed mechanism of this coupling, which gives rise to complex absorption and emission spectra, is the subject of ongoing controversy. In this work we show that the particularly rich, absorption spectra of (PEA)(2)(CH3NH3)(n-1)PbnI3n+1 (where PEA stands for phenylethylammonium and n = 1, 2, 3), are related to a vibronic progression of excitonic transition. In contrast to other two-dimensional perovskites, we observe a coupling to a high-energy (40 meV) phonon mode probably related to the torsional motion of the NH3+ head of the organic spacer.

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SP - 5830

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Revealing Excitonic Phonon Coupling in (PEA)(2)(MA)(n-1)PbnI3n+1 2D Layered Perovskites

Abstract

Funding

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