Optical Rashba effect in a light-emitting perovskite metasurface
The Rashba effect, i.e., the splitting of electronic spin-polarized bands in the momentum space of a crystal with broken inversion symmetry, has enabled the realization of spin-orbitronic devices, in which spins are manipulated by spin-orbit coupling. In optics, where the helicity of light polarizat...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2022
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| Online Access: | https://hdl.handle.net/10356/162061 |
| _version_ | 1826122667587010560 |
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| author | Tian, Jingyi Adamo, Giorgio Liu, Hailong Klein, Maciej Han, Song Liu, Hong Soci, Cesare |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Tian, Jingyi Adamo, Giorgio Liu, Hailong Klein, Maciej Han, Song Liu, Hong Soci, Cesare |
| author_sort | Tian, Jingyi |
| collection | NTU |
| description | The Rashba effect, i.e., the splitting of electronic spin-polarized bands in the momentum space of a crystal with broken inversion symmetry, has enabled the realization of spin-orbitronic devices, in which spins are manipulated by spin-orbit coupling. In optics, where the helicity of light polarization represents the spin degree of freedom for spin-momentum coupling, the optical Rashba effect is manifested by the splitting of optical states with opposite chirality in the momentum space. Previous realizations of the optical Rashba effect relied on passive devices determining the surface plasmon or light propagation inside nanostructures, or the directional emission of chiral luminescence when hybridized with light-emitting media. An active device underpinned by the optical Rashba effect is demonstrated here, in which a monolithic halide perovskite metasurface emits highly directional chiral photoluminescence. An all-dielectric metasurface design with broken in-plane inversion symmetry is directly embossed into the high-refractive-index, light-emitting perovskite film, yielding a degree of circular polarization of photoluminescence of 60% at room temperature. |
| first_indexed | 2024-10-01T05:51:55Z |
| format | Journal Article |
| id | ntu-10356/162061 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:51:55Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1620612024-07-22T15:34:36Z Optical Rashba effect in a light-emitting perovskite metasurface Tian, Jingyi Adamo, Giorgio Liu, Hailong Klein, Maciej Han, Song Liu, Hong Soci, Cesare School of Physical and Mathematical Sciences The Photonics Institute Centre for Disruptive Photonic Technologies (CDPT) Physics Circularly Polarized Luminescence Directional Emission The Rashba effect, i.e., the splitting of electronic spin-polarized bands in the momentum space of a crystal with broken inversion symmetry, has enabled the realization of spin-orbitronic devices, in which spins are manipulated by spin-orbit coupling. In optics, where the helicity of light polarization represents the spin degree of freedom for spin-momentum coupling, the optical Rashba effect is manifested by the splitting of optical states with opposite chirality in the momentum space. Previous realizations of the optical Rashba effect relied on passive devices determining the surface plasmon or light propagation inside nanostructures, or the directional emission of chiral luminescence when hybridized with light-emitting media. An active device underpinned by the optical Rashba effect is demonstrated here, in which a monolithic halide perovskite metasurface emits highly directional chiral photoluminescence. An all-dielectric metasurface design with broken in-plane inversion symmetry is directly embossed into the high-refractive-index, light-emitting perovskite film, yielding a degree of circular polarization of photoluminescence of 60% at room temperature. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Submitted/Accepted version This research was supported by the A*STAR-AME programmatic fund on Nanoantenna Spatial Light Modulators for Next-Gen Display Technologies (grant A18A7b0058), and the Singapore Ministry of Education (Tier 3 grant MOE2016-T3-1-006). 2022-10-03T04:40:14Z 2022-10-03T04:40:14Z 2022 Journal Article Tian, J., Adamo, G., Liu, H., Klein, M., Han, S., Liu, H. & Soci, C. (2022). Optical Rashba effect in a light-emitting perovskite metasurface. Advanced Materials, 34(12), e2109157-. https://dx.doi.org/10.1002/adma.202109157 0935-9648 https://hdl.handle.net/10356/162061 10.1002/adma.202109157 35045198 2-s2.0-85124593321 12 34 e2109157 en A18A7b0058 MOE2016-T3-1-006 Advanced Materials 10.21979/N9/6ZW2EM © 2022 Wiley-VCH GmbH. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1002/adma.202109157. application/pdf |
| spellingShingle | Physics Circularly Polarized Luminescence Directional Emission Tian, Jingyi Adamo, Giorgio Liu, Hailong Klein, Maciej Han, Song Liu, Hong Soci, Cesare Optical Rashba effect in a light-emitting perovskite metasurface |
| title | Optical Rashba effect in a light-emitting perovskite metasurface |
| title_full | Optical Rashba effect in a light-emitting perovskite metasurface |
| title_fullStr | Optical Rashba effect in a light-emitting perovskite metasurface |
| title_full_unstemmed | Optical Rashba effect in a light-emitting perovskite metasurface |
| title_short | Optical Rashba effect in a light-emitting perovskite metasurface |
| title_sort | optical rashba effect in a light emitting perovskite metasurface |
| topic | Physics Circularly Polarized Luminescence Directional Emission |
| url | https://hdl.handle.net/10356/162061 |
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