The Structural Origin of Chiroptical Properties in Perovskite Nanocrystals with Chiral Organic Ligandsopen access
- Authors
- Kim, Young-Hoon; Song, Ruyi; Hao, Ji; Zhai, Yaxin; Yan, Liang; Moot, Taylor; Palmstrom, Axel F.; Brunecky, Roman; You, Wei; Berry, Joseph J.; Blackburn, Jeffrey L.; Beard, Matthew C.; Blum, Volker; Luther, Joseph M.
- Issue Date
- Jun-2022
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- chiral ligands; chiral transfer mechanism; circularly polarized light detector; colloidal perovskite nanocrystals; lattice distortion
- Citation
- ADVANCED FUNCTIONAL MATERIALS, v.32, no.25, pp 1 - 10
- Pages
- 10
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED FUNCTIONAL MATERIALS
- Volume
- 32
- Number
- 25
- Start Page
- 1
- End Page
- 10
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/170278
- DOI
- 10.1002/adfm.202200454
- ISSN
- 1616-301X
1616-3028
- Abstract
- The authors investigate how chiral ligands attached to perovskite nanocrystal (PNC) surfaces structurally distort the perovskite lattice. Chiral electro-optical properties of the resulting PNCs are demonstrated through the fabrication of a circularly polarized light (CPL) detector with a discrimination of up to 14% between left- and right-handed CPL. Both experimental and electronic-structure-based simulations are combined to provide insights into the interactions (both structural and electronic) between chiral organic ligands and PNCs. The major finding is a centro-asymmetric distortion of the surface lattice that penetrates up to five atomic unit cells deep into the PNCs, which is the likely cause of the chiral-optical properties. Spin-polarized transport through chiral-PNCs results from the chiral-induced spin selectivity effect and amplifies the discrimination between left and right-handed CPL as is experimentally demonstrated in the detectors.
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