Imaging ultrafast charge transfer at n = 3/n = 1 low-dimensional perovskites single flake heterostructures
To fulfill the promise of two-dimensional perovskites (2DPs) for high-performance optoelectronics, we used mechanical exfoliation to obtain n = 1 / n = 3 2DP-heterostructures and ultrafast techniques to characterize charge carriers’ dynamics at interface. In the presence of the heterostructure, we observe the suppression of excitonic-radiative recombination and the introduction of a fast decay channel for excitons (t < 2 ns) which explains more than 80% of the total photoluminescence decay. Such evidence can be explained through ultrafast electron and hole transfer at the heterostructure interface.
Authors
- Federico Visentin (ORCID: https://orcid.org/0000-0002-2210-210X)
- Lucía Olano‐Vegas (ORCID: https://orcid.org/0000-0002-4710-2069)
- Franco V. A. Camargo (ORCID: https://orcid.org/0000-0001-8312-7899)
- Giulia Grancini (ORCID: https://orcid.org/0000-0001-8704-4222)
- Giulio Cerullo (ORCID: https://orcid.org/0000-0002-9534-2702)
- Fabiola Faini (ORCID: https://orcid.org/0000-0002-5653-6256)
- Luis E. Hueso (ORCID: https://orcid.org/0000-0002-7918-8047)
- Martin Hörmann
- Yaiza Asensio (ORCID: https://orcid.org/0000-0001-5434-638X)
- Beatriz Martin Garcia
Institutions
- Ikerbasque (ES)
- University of Pavia (IT)
- CIC nanoGUNE (ES)
- Istituto di Fotonica e Nanotecnologie (IT)
- National Interuniversity Consortium of Materials Science and Technology (IT)
- Politecnico di Milano (IT)
Publication Details
- Published
- 2024-09-30
- DOI
- https://doi.org/10.1117/12.3028790
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00