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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 (författare)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten,Queen Mary Univ London, England
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- Shi, Wenda (författare)
- Imperial Coll London, England; Imperial Coll London, England
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- Tang, Weidong (författare)
- Queen Mary Univ London, England
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- Liu, Zilu (författare)
- UCL, England
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- Schroeder, Bob C. (författare)
- UCL, England
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- Fenwick, Oliver (författare)
- Queen Mary Univ London, England
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- Fuchter, Matthew J. (författare)
- Imperial Coll London, England; Imperial Coll London, England; Imperial Coll London, England
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(creator_code:org_t)
- 2022-02-02
- 2022
- Engelska.
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Ingår i: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 16:2, s. 2682-2689
- Relaterad länk:
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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
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- chiral perovskite; quasi-2D perovskites; photodetectors; circular dichroism; circularly polarized light
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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ACS Nano
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