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Chiral 3D Perovskite Formation Induced by Chiral Templates.
- Source :
-
Nano letters [Nano Lett] 2024 Aug 07; Vol. 24 (31), pp. 9569-9574. Date of Electronic Publication: 2024 Jul 29. - Publication Year :
- 2024
-
Abstract
- Chiral 3D perovskites pose challenges compared to lower-dimensional variants due to limited chiral organic cation options. Here, we present a universal and controlled method for synthesizing chiral 3D lead halide perovskites using organic amines or alcohols as chiral templates. Introducing these templates to PbCl <subscript>2</subscript> in N , N -dimethylformamide (DMF) under acidic conditions induces the crystallization of R/S [DMA]PbCl <subscript>3</subscript> (DMA = dimethylamine). The resulting structure aligns with the templates used, stemming from the helical Pb <subscript>2</subscript> Cl <subscript>9</subscript> <superscript>5-</superscript> chain as verified by single-crystal X-ray diffraction. Furthermore, the chiral perovskite exhibits absorption and circular dichroism (CD) signals in the high-energy band, enabling the circularly polarized light (CPL) detection in the UV spectrum. A CPL detector constructed by this chiral perovskite demonstrates excellent performance, boasting an anisotropy factor for photocurrent ( g <subscript>Iph</subscript> ) of 0.296. Our work not only introduces a novel and controllable method for crafting chiral perovskites but also opens new avenues for circularly polarized light detection.
Details
- Language :
- English
- ISSN :
- 1530-6992
- Volume :
- 24
- Issue :
- 31
- Database :
- MEDLINE
- Journal :
- Nano letters
- Publication Type :
- Academic Journal
- Accession number :
- 39074177
- Full Text :
- https://doi.org/10.1021/acs.nanolett.4c02125