Chiral 2D-perovskite nanowires for stokes photodetectors

Yingjie Zhao, Yuchen Qiu, Jiangang Feng, Jiahui Zhao, Gaosong Chen, Hanfei Gao, Yuyan Zhao, Lei Jiang, Yuchen Wu

Research output: Contribution to journalArticleResearchpeer-review

47 Citations (Scopus)

Abstract

Structural engineering in multiple scales permits the integration of exotic properties into a single material, which boosts the development of ultracompact multifunctional devices. Layered perovskites are capable of cross-linking efficient carrier transport originating from few-layer perovskite frameworks with extended functionalities contributed by designable bulky organic cations and nanostructures, thus providing a platform for multiscale material engineering. Herein, high-performance Stokes-parameter photodetectors for arbitrary polarized light detection are realized on the basis of solution-processed chiral-perovskite nanowire arrays. The chiral ammonium cations intercalated between the perovskite layers are responsive to circularly polarized light with a maximum anisotropy factor of 0.15, while the strictly aligned nanowires with the anisotropic dielectric function result in a large polarized ratio of 1.6 to linearly polarized light. Single crystallinity and pure crystallographic orientation permit efficient in-plane carrier transport along the nanowires, yielding a responsivity of 47.1 A W-1 and a detectivity of 1.24 × 1013 Jones. By synergy of linear- and circular-polarization response with high optoelectronic performance for providing sufficient photocurrent contrasts, Stokes-parameter photodetection is demonstrated on these nanowires. Our Stokes-parameter photodetectors with a small footprint and high performances present promising applications toward polarization imaging.

Original languageEnglish
Pages (from-to)8437-8445
Number of pages9
JournalJournal of the American Chemical Society
Volume143
Issue number22
DOIs
Publication statusPublished - 17 May 2021
Externally publishedYes

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