The Structural Origin of Chiroptical Properties in Perovskite Nanocrystals with Chiral Organic Ligands
- Title
- The Structural Origin of Chiroptical Properties in Perovskite Nanocrystals with Chiral Organic Ligands
- Author
- 김영훈
- Keywords
- chiral ligands; chiral transfer mechanism; circularly polarized light detector; colloidal perovskite nanocrystals; lattice distortion
- Issue Date
- 2022-06
- Publisher
- WILEY-V C H VERLAG GMBH
- Citation
- ADVANCED FUNCTIONAL MATERIALS, v. 32, NO. 25, article no. 2200454, Page. 1-10
- 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.
- URI
- https://onlinelibrary.wiley.com/doi/10.1002/adfm.202200454https://repository.hanyang.ac.kr/handle/20.500.11754/178318
- ISSN
- 1616-301X;1616-3028
- DOI
- 10.1002/adfm.202200454
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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- The Structural Origin of Chiroptical Properties in Perovskite Nanocrystals with Chiral Organic Ligands.pdfDownload
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