Near-Infrared Vortex Emission from Halide Perovskite via a Quasi-Guided-Mode-Coupled Bound State in the Continuum
Bound states in the continuum (BICs) present a promising quantum optics platform, yet their inherent field confinement typically limits the local density of optical states (LDOS) for emitters unless active materials are directly patterned into BIC structures. This constraint is particularly acute for solution-processed emitters. Here, we demonstrate a quasi-guided-mode-coupled second-order BIC in silicon metasurfaces that simultaneously ensures the LDOS within the emission layer and the light–matter interaction strength. This mechanism avoids complex direct patterning of active materials and enables the first observation of vortex emission from halide perovskites at 1 μm wavelength. At the same time, efficient spatial overlap between perovskite emitters and photonic modes realizes enhanced near-infrared emission coherence from perovskites and >50 nm emission wavelength tuning through metasurface parameter adjustments─the broadest reported range to date. This work provides critical insights for developing CMOS-compatible perovskite light sources leveraging BIC physics.
Authors
- Hui Jun Ren (ORCID: https://orcid.org/0000-0002-7940-6630)
- Pengzhi Wang (ORCID: https://orcid.org/0000-0003-4391-7129)
- Changlei Wang (ORCID: https://orcid.org/0000-0003-1257-627X)
- Leyi Zhao (ORCID: https://orcid.org/0000-0002-3300-4847)
- Qi Wei (ORCID: https://orcid.org/0000-0002-5322-3692)
- Qi Liu
- Xiang Zhang (ORCID: https://orcid.org/0000-0002-8014-7859)
- Mingjie Li (ORCID: https://orcid.org/0000-0003-0417-5089)
- Kai Wang (ORCID: https://orcid.org/0000-0003-0443-6955)
- Yue Zhao (ORCID: https://orcid.org/0000-0003-1008-6525)
- Luwei Zhou
Institutions
- Hong Kong Polytechnic University (HK)
- Shenzhen Polytechnic University (CN)
- Center for NanoScience (DE)
- Southern University of Science and Technology (CN)
- Soochow University (CN)
- Photonics (United States) (US)
- City University of Hong Kong, Shenzhen Research Institute (CN)
Publication Details
- Journal
- ACS Photonics
- Published
- 2025-07-25
- DOI
- https://doi.org/10.1021/acsphotonics.5c01317
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Research Grants Council, University Grants Committee
- Guangdong Science and Technology Department
- Innovation and Technology Fund
- Science, Technology and Innovation Commission of Shenzhen Municipality
- Southern University of Science and Technology