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Communication Dans Un Congrès Année : 2023

Tight-binding modelling of layered halide perovskites

Résumé

In recent years, layered heterostructures of halide perovskites have emerged as promising optoelectronic systems due to their tunability and to the presence of strong excitonic effects [1], with potential applications for efficient light emission, spintronics, single-photon emission and photonic logic. This last technology is being developped by the H2020 POLLOC (polariton logic) consortium using exciton-polariton devices. From the theoretical point of view, first-principles studies of exciton physics in layered halide pervoskites are possible [2] but severely constrained by system size. To go beyond this limitation, symmetry-based semi-empirical tight-binding models have provided an efficient description of the electronic structure and optical properties of bulk halide perovskites [3-5]. In this talk, we will discuss such models and their extension to the case of layered perovskites, a stepping stone towards a robust description of excitons in these compounds within the tight-binding framework [6,7]. [1] J.-C. Blancon et al., Nature Comm. 9, 2254 (2018) [2] C. Quarti et al., Adv. Optical Mater. 2023, 2202801 [3] S. Boyer-Richard et al., J. Phys. Chem. Lett. 7, 3833 (2016) [4] A. Marronnier et al., ACS Nano 12, 3477 (2018) [5] Z. Wei et al., Nature Comm. 10, 5342 (2019) [6] R. Benchamekh et al., Phys. Rev. B 91, 045118 (2015) [7] Y. Cho et al., Phys. Chem. Lett. 10, 6189 (2019) This work was supported by the M-ERANET grant PHANTASTIC Call 2021.
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Dates et versions

hal-04126285 , version 1 (13-06-2023)

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  • HAL Id : hal-04126285 , version 1

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Simon Thébaud, Bruno Cucco, Claudio Quarti, George Volonakis, Laurent Pedesseau, et al.. Tight-binding modelling of layered halide perovskites. 8è Journées Pérovskites Halogénées 2023 (JPH 2023), May 2023, Biarritz, France. ⟨hal-04126285⟩
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