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Communication Dans Un Congrès Année : 2022

Excitonic Properties of Vacancy Ordered Halide Double Perovskites: From Wannier to Frenkel excitons

Résumé

Over the past decade ABX3 halide perovskites based on Pb have emerged as a most-promising class of materials. To-date they have been employed for record-breaking solar-cells, highly-efficient lightemitters, new photo-catalysts and even as X-ray detectors. A2BX6 vacancy ordered double perovskites (VODP) are air-stable and environmentally friendly (Pb-free) that have been proposed as alternatives, to halide perovskites. Yet, VODP materials have not achieve the high performance of their Pb-based counterparts. In this work, we thoroughly analyze the properties of the VODP family of materials by employing state-of-art ab initio calculations to unveil the key details of the electronic structure and the effects of electron-hole coupling on the optical properties.
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Dates et versions

hal-03949749 , version 1 (20-01-2023)

Identifiants

  • HAL Id : hal-03949749 , version 1

Citer

Bruno Cucco, Claudine Katan, Jacky Even, Mikaël Kepenekian, George Volonakis. Excitonic Properties of Vacancy Ordered Halide Double Perovskites: From Wannier to Frenkel excitons. 12è Journées Nationales du PhotoVoltaïque (JNPV 2022), Nov 2022, dourdan, France. ⟨hal-03949749⟩
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