Ferroelectric brightening of spin‑forbidden dark excitons in a WSe2/hybrid-perovskite heterostructure
and perovskite crystals controls the ferroelectric coupling strength and valley-contrasting polarization. Our proposed mechanism, supported by a four-band tight-binding model, suggests that the ferroelectric proximity effect induces an asymmetric intersublattice interaction, generating an effective in-plane spin-orbit coupling (SOC) field that rotates spin/valley polarization and brightens dark excitons. Our work establishes ferroelectric proximity coupling as a symmetry-tunable, magnetic-field-free strategy for spin exciton control in two-dimensional semiconductors.
Authors
- Maxim Trushin
- Chuanqi Zhang (ORCID: https://orcid.org/0000-0001-6666-3593)
- Yi Wei Ho (ORCID: https://orcid.org/0000-0002-5487-4948)
- Andrés Granados del Águila (ORCID: https://orcid.org/0000-0002-8162-7192)
- Shaffique Adam (ORCID: https://orcid.org/0000-0002-3095-9920)
- Zhenyue Wu (ORCID: https://orcid.org/0000-0002-5104-1684)
- Mykola Telychko (ORCID: https://orcid.org/0000-0002-8156-8938)
- Dmitrii Litvinov
- Kian Ping Loh (ORCID: https://orcid.org/0000-0002-1491-743X)
- Magdalena Grzeszczyk
- Goki Eda (ORCID: https://orcid.org/0000-0002-1575-8020)
- Yuan Chen
- Ivan Verzhbitskiy (ORCID: https://orcid.org/0000-0001-5945-8276)
- Kuan Eng Johnson Goh
- Xinyun Wang (ORCID: https://orcid.org/0000-0003-2790-6884)
- Maciej Koperski (ORCID: https://orcid.org/0000-0002-8301-914X)
- Xinwei Li (ORCID: https://orcid.org/0000-0003-0555-2624)
Institutions
- Agency for Science, Technology and Research (SG)
- National University of Singapore (SG)
- Nanyang Technological University (SG)
- Institute of Materials Research and Engineering (SG)
Publication Details
- Journal
- Nature Communications
- Published
- 2026-05-09
- DOI
- https://doi.org/10.1038/s41467-026-72143-y
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Research Foundation
- Agency for Science, Technology and Research
- National Research Foundation Singapore
- Ministry of Education, India
- Office of Naval Research
- Office of Naval Research Global