Tailoring Structural and Photophysical Properties in 2D Halide Perovskites

Luisa De Marco^a, Laura Polimeno^a, Marco Cinquino^a^,^b, Milena De Giorgi^a, Giuseppe Gigli^a^,^b, Daniele Sanvitto^a

^aCNR NANOTEC Institute of Nanotechnology, Via Monteroni, 73100 Lecce, Italy

^bDipartimento di Matematica e Fisica, Universitá del Salento, Via Arnesano, 73100 Lecce, Italy

Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Spring Meeting 2022 (NSM22)

#PhotoPero22. Photophysics of Halide Perovskites and Related Materials - from Bulk to Nano

Online, Spain, 2022 March 7th - 11th

Organizers: Sascha Feldmann, Annamaria Petrozza and Ajay Ram Srimath Kandada

Invited Speaker, Luisa De Marco, presentation 110
DOI: https://doi.org/10.29363/nanoge.nsm.2022.110
Publication date: 7th February 2022

Two-dimensional (2D) hybrid organic-inorganic perovskites are among the most promising materials for optoelectronic applications thanks to the great synthetic versatility that allows tailoring their structural and photophysical properties. The alternation between organic ligands and inorganic layers creates a natural multiple quantum well (MQW) structure where the inorganic layers act as potential ‘wells’ while organics serve as energetic ‘barriers’. This structure provides strong electronic confinement and, as a consequence, creates stable excitons with high binding energy at room temperature. [1]

In this talk I will show that large single-crystal flakes of 2D perovskite are able to establish strong light-matter coupling with the generation of exciton−polaritons. These half-light half-matter quasi-particles have unique properties: they possess strong intrinsic nonlinearities, inherited from their excitonic component and extremely small effective mass and long coherence length, inherited from their photonic component.

By comparing different hybrid perovskites with the same inorganic layer but different organic interlayers, it is shown how the nature of the organic ligands controllably affects the out-of-plane exciton–photon coupling. [2]

Moreover, 2D single-crystals perovskite are able to sustain strong polariton nonlinearities at room temperature, with exciton-exciton interaction energies remarkably similar to the ones known for inorganic quantum wells at cryogenic temperatures and more than one order of magnitude larger than alternative room temperature polariton devices reported so far. [3]

Because of their easy fabrication, large dipolar oscillator strengths, and strong nonlinearities, these materials ideal candidate for integrated photonic circuits and electro-optical devices working at room temperature. [4 - 6]

References:

[1] Smith, M. D.; Connor, B. A.; Karunadasa, H. I. Tuning the Luminescence of Layered Halide Perovskites. Chem. Rev. 2018, 119, 3104-3139

[2] Fieramosca, A.; De Marco, L.; Passoni, M.; Polimeno, L.; Rizzo, A.; Rosa, B. L. T.; Cruciani, G.; Dominici, L.; De Giorgi, M.; Gigli, G.; Andreani, L. C.; Gerace, D.; Ballarini, D.; Sanvitto, D. Tunable Out-of-Plane Excitons in 2D Single-Crystal Perovskites. ACS Photonics 2018, 5, 4179-4185.

[3] Fieramosca, A.; Polimeno, L.; Ardizzone, V.; De Marco, L.; Pugliese, M.; Maiorano, V.; De Giorgi, M.; Dominici, L.; Gigli, G.; Gerace, D.; Ballarini, D.; Sanvitto, D. Two-dimensional hybrid perovskites sustaining strong polariton interactions at room temperature. Sci. Adv. 2019, 5, eaav9967.

[4] Polimeno, L.; Fieramosca, A.; Lerario, G.; Cinquino, M.; De Giorgi, M.; Ballarini, D.; Todisco, F.; Dominici, L.; Ardizzone, V.; Pugliese, M.; Prontera, C. T.; Maiorano, V.; Gigli, G.; De Marco, L.; Sanvitto, D. Observation of Two Thresholds Leading to Polariton Condensation in 2D Hybrid Perovskites. Adv. Optical Mater. 2020, 8, 2000176.

[5] Cinquino, M.; Fieramosca, A.; Mastria, R.; Polimeno, L.; Moliterni, A.; Olieric, V.; Matsugaki, N.; Panico, R.; De Giorgi, M.; Gigli, G.; Giannini, C.; Rizzo, A.; Sanvitto, D.; De Marco L. Managing Growth and Dimensionality of Quasi 2D Perovskite Single-Crystalline Flakes for Tunable Excitons Orientation. Adv. Mater. 2021, 2102326.

[6] Polimeno, L.; Lerario, G.; De Giorgi, M.; De Marco, L.; Dominici, L.; Todisco, F.; Coriolano, A.; Ardizzone, V.; Pugliese, M.; Prontera, C. T.; Maiorano, V.; Moliterni, A.; Giannini, C.; Olieric, V.; Gigli, G.; Ballarini, D.; Xiong, Q.; Fieramosca, A.; D. Solnyshkov, D. D.; Malpuech, G.; Sanvitto, D. Tuning of the Berry curvature in 2D perovskite polaritons. Nat. Nanotechnol. (2021). https://doi.org/10.1038/s41565-021-00977-2

Acknowledgements:

This research was funded by Apulia Region, project “Progetto Tecnopolo per la Medicina di precisione”, grant number: Deliberazione della Giunta Regionale n. 2117 del 21/11/2018, by Ministry of University and Scientific Research (MIUR), project PRIN Interacting Photons in Po-lariton Circuits—INPhoPOL, grant number: 2017P9FJBS_001 and by National Research Council, Bilateral Project CNR/RFBR (RUSSIA).

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