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High Responsivity C...
High Responsivity Circular Polarized Light Detectors based on Quasi Two-Dimensional Chiral Perovskite Films
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- Liu, Tianjun (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten,Queen Mary Univ London, England
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- Shi, Wenda (author)
- Imperial Coll London, England; Imperial Coll London, England
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- Tang, Weidong (author)
- Queen Mary Univ London, England
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- Liu, Zilu (author)
- UCL, England
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- Schroeder, Bob C. (author)
- UCL, England
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- Fenwick, Oliver (author)
- Queen Mary Univ London, England
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- Fuchter, Matthew J. (author)
- Imperial Coll London, England; Imperial Coll London, England; Imperial Coll London, England
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(creator_code:org_t)
- 2022-02-02
- 2022
- English.
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In: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 16:2, s. 2682-2689
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Circularly polarized light (CPL) has considerable technological potential, from quantum computing to bioimaging. To maximize the opportunity, high performance photodetectors that can directly distinguish left-handed and right-handed circularly polarized light are needed. Hybrid organic- inorganic perovskites containing chiral organic ligands are an emerging candidate for the active material in CPL photo-detecting devices, but current studies suggest there to be a trade-off between the ability to differentially absorb CPL and photocurrent responsivity in chiral perovskites devices. Here, we report a CPL detector based on quasi two-dimensional (quasi-2D) chiral perovskite films. We find it is possible to generate materials where the circular dichroism (CD) is comparable in both 2D and quasi-2D films, while the responsivity of the photodetector improves for the latter. Given this, we are able to showcase a CPL photodetector that exhibits both a high dissymmetry factor of 0.15 and a high responsivity of 15.7 A W-1. We believe our data further advocates the potential of chiral perovskites in CPL-dependent photonic technologies.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- chiral perovskite; quasi-2D perovskites; photodetectors; circular dichroism; circularly polarized light
Publication and Content Type
- ref (subject category)
- art (subject category)
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