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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
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Light-Emitting Halide Perovskite Nanoantennas.
E Y Tiguntseva1, G P Zograf1, F E Komissarenko1
1Department of Nanophotonics and Metamaterials, ITMO University , St. Petersburg, 197101, Russia.
Nano Letters
|January 25, 2018
Summary
We demonstrate novel light-emitting nanoantennas using halide perovskites. These all-dielectric resonant nanostructures enhance photoluminescence by coupling excitons to Mie resonances, offering a cost-effective fabrication method.
Area of Science:
- Nanophotonics
- Materials Science
Background:
- High-index dielectric nanoantennas are promising for nanophotonic devices.
- Halide perovskites offer high refractive index and room-temperature excitons with high luminescence quantum yield, ideal for all-dielectric resonant nanophotonics.
Purpose of the Study:
- To create light-emitting nanoantennas using halide perovskites.
- To enhance photoluminescence through exciton-Mie resonance coupling.
- To develop a cost-effective fabrication method for resonant perovskite nanostructures.
Main Methods:
- Fabrication of halide perovskite thin films using wet-chemistry methods.
- Utilizing laser ablation for creating resonant perovskite nanostructures.
- Characterization of light emission properties.
Main Results:
- Demonstrated halide perovskite nanoantennas exhibiting enhanced photoluminescence.
- Observed light emission tunable from 530-770 nm based on perovskite composition.
- Developed a simple and cost-effective laser ablation technique for fabrication.
Conclusions:
- Halide perovskite nanoantennas are a viable platform for efficient light emission.
- Exciton-Mie resonance coupling significantly enhances photoluminescence.
- Laser ablation offers a scalable and economical route for producing these nanostructures.
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