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Title: Perovskite metasurfaces with large superstructural chirality
Authors: Long, Guankui
Adamo, Giorgio
Tian, Jingyi
Klein, Maciej
Krishnamoorthy, Harish N. S.
Feltri, Elena
Wang, Hebin
Soci, Cesare
Keywords: Science::Physics
Issue Date: 2022
Source: Long, G., Adamo, G., Tian, J., Klein, M., Krishnamoorthy, H. N. S., Feltri, E., Wang, H. & Soci, C. (2022). Perovskite metasurfaces with large superstructural chirality. Nature Communications, 13(1), 1551-.
Project: NRF-CRP14–2014-03
Journal: Nature Communications
Abstract: Recent attempts to synthesize hybrid perovskites with large chirality have been hampered by large size mismatch and weak interaction between their structure and the wavelength of light. Here we adopt a planar nanostructure design to overcome these limitations and realize all-dielectric perovskite metasurfaces with giant superstructural chirality. We identify a direct spectral correspondence between the near- and the far- field chirality, and tune the electric and magnetic multipole moments of the resonant chiral metamolecules to obtain large anisotropy factor of 0.49 and circular dichroism of 6350 mdeg. Simulations show that larger area metasurfaces could yield even higher optical activity, approaching the theoretical limits. Our results clearly demonstrate the advantages of nanostructrure engineering for the implementation of perovskite chiral photonic, optoelectronic, and spintronic devices.
ISSN: 2041-1723
DOI: 10.1038/s41467-022-29253-0
DOI (Related Dataset): 10.21979/N9/N43DZX
Schools: School of Physical and Mathematical Sciences 
Research Centres: Centre for Disruptive Photonic Technologies (CDPT) 
The Photonics Institute 
Rights: © 2022 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit licenses/by/4.0/.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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