Data from: Chiral perovskite nanoplatelets with tunable circularly polarized luminescence in the strong confinement regime

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  • Chiral perovskite nanocrystals have emerged as an interesting chiral excitonic platform that combines both structural flexibility and superior optoelectronic properties. Despite several recent demonstrations of optical activity in various chiral perovskite nanocrystals, efficient circularly polarized luminescence (CPL) with tunable energies remains a challenge. The chirality imprinting mechanism as a function of perovskite nanocrystal dimensionality remains elusive. Here, atomically thin inorganic perovskite nanoplatelets (NPLs) are synthesized with precise control of layer thickness and are functionalized by chiral surface ligands, serving as a unique platform to probe the chirality transfer mechanism at the organic/perovskite interface. It is found that chirality is successfully imprinted into mono-, bi-‚ and tri-layer inorganic perovskite NPLs, exhibiting tunable circular dichroism (CD) and CPL responses. However, chirality transfer decreases in thicker NPLs, resulting in decreased CD and CPL dissymmetry factors for thicker NPLs. Aided by large-scale first-principles calculations, it is proposed that chirality transfer is mainly mediated through a surface distortion rather than a hybridization of electronic states, giving rise to symmetry breaking in the perovskite lattice and spin-split conduction bands. The findings described here provide an in-depth understanding of chirality transfer and design principles for distorted-surface perovskites for chiral photonic applications. ... [Read More]

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Data Citation
  • Song, R., Cao, Q., Chan, C. Wang, Z., Wong, P. Y., Wong, K. S., Blum, V. & Lu, H. (2023). Data from: Chiral perovskite nanoplatelets with tunable circularly polarized luminescence in the strong confinement regime. Duke Research Data Repository. https://doi.org/10.7924/r4v40x41n
DOI
  • 10.7924/r4v40x41n
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  • ark:/87924/r4v40x41n
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Related Materials
  • Cao, Q., Song, R., Chan, C. C. S., Wang, Z., Wong, P. Y., Wong, K. S., Blum, V. & Lu, H. (2023). Chiral Perovskite Nanoplatelets with Tunable Circularly Polarized Luminescence in the Strong Confinement Regime. Adv. Optical Mater, 11(12).  https://doi.org/10.1002/adom.202203125
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  • Data from: Chiral perovskite nanoplatelets with tunable circularly polarized luminescence in the strong confinement regime
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Thumbnail Title Date Uploaded Visibility Actions
file details README.txt 2023-02-28 Public Download
file details 1_layer_relax 2023-02-28 Public
file details 2_layer_relax 2023-02-28 Public
file details selected_5_geometries_relax_and_band 2023-02-28 Public

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