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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
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Highly Confined Hybridized Polaritons in Scalable van der Waals Heterostructure Resonators
Yue Luo1,2,3, Ji-Hoon Park4, Jiadi Zhu4
1School of Electronic Science and Engineering, Southeast University, Nanjing, Jiangsu 210096, China.
ACS Nano
|June 28, 2024
Summary
We demonstrate scalable fabrication of nanophotonic devices using hybrid phonon-polariton and graphene plasmon modes. These devices offer low-loss light manipulation for on-chip optical components.
Area of Science:
- Nanophotonics
- Materials Science
- Quantum Optics
Background:
- Controlling planar optical fields is key for advanced optical devices.
- Phonon polaritons in hexagonal boron nitride (h-BN) are explored for near-infrared radiation control.
- Hybridizing h-BN phonon polaritons with graphene plasmons offers enhanced control and reduced losses.
Purpose of the Study:
- To develop a scalable fabrication method for heterostructure nanodisc resonators.
- To investigate the properties of hybridized polariton modes in graphene/h-BN heterostructures.
- To demonstrate the potential of these structures for on-chip optical components.
Main Methods:
- Fabrication of heterostructure nanodisc resonators using chemical vapor deposition-grown graphene and h-BN.
- Mid-infrared nanoimaging for real-space visualization of hybridized polaritons.
- Nanoscale Fourier transform infrared spectroscopy for quality factor measurements.
- Numerical simulations to understand polariton behavior.
Main Results:
- Demonstrated localized hybridized polariton modes in nanodisc resonators.
- Showcased collective coupling of nanodiscs to waveguides.
- Measured high quality factors for the nanodisc resonators.
- Confirmed the tunable nature of the hybridized modes.
Conclusions:
- Scalable fabrication of graphene/h-BN heterostructure nanodisc resonators is achieved.
- These structures support high-quality, low-loss hybridized polaritons.
- The demonstrated devices offer practical strategies for on-chip optical components and integrated photonics.
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