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Organometallic Perovskite Metasurfaces
Behrad Gholipour1, Giorgio Adamo1, Daniele Cortecchia2,3
1Centre for Disruptive Photonic Technologies, TPI, SPMS, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
Advanced Materials (Deerfield Beach, Fla.)
|January 6, 2017
Summary
Organometallic perovskites enable all-dielectric metamaterials for visible light applications. Their metasurfaces offer tunable structural coloring and enhanced luminescence properties.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Organometallic perovskites possess excellent optoelectronic properties and high refractive index.
- These materials are solution-processable, facilitating fabrication.
- They offer a promising platform for developing metamaterials operating at visible frequencies.
Purpose of the Study:
- To realize all-dielectric metamaterials using organometallic perovskites.
- To achieve tunable structural coloring across the visible spectrum.
- To investigate the impact of perovskite metasurfaces on luminescence properties.
Main Methods:
- Fabrication of perovskite metasurfaces via subwavelength structuring.
- Characterization of optical properties, including structural coloring.
- Measurement of luminescence yield and decay time.
Main Results:
- Successful realization of perovskite metasurfaces with tunable structural coloring.
- Observation of a threefold increase in luminescence yield.
- Significant reduction in luminescence decay time.
Conclusions:
- Organometallic perovskite metasurfaces are effective for visible-frequency all-dielectric metamaterials.
- Subwavelength structuring enables precise control over optical properties.
- These metasurfaces exhibit enhanced light-emitting characteristics.
