High responsivity circular polarized light detectors based on quasi two-dimensional chiral perovskite films.
File(s)Manuscript ACSNano revised clean.pdf (3.03 MB)
Accepted version
Author(s)
Type
Journal Article
Abstract
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 photodetecting 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.
Date Issued
2022-02-22
Date Acceptance
2022-01-28
ISSN
1936-0851
Publisher
American Chemical Society
Start Page
2682
End Page
2689
Journal / Book Title
ACS Nano
Volume
16
Issue
2
Copyright Statement
© 2022 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Nano, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acsnano.1c09521
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://pubs.acs.org/doi/10.1021/acsnano.1c09521
https://www.ncbi.nlm.nih.gov/pubmed/35107990
Grant Number
EP/R00188X/1
Subjects
chiral perovskite
circular dichroism
circularly polarized light
photodetectors
quasi-2D perovskites
chiral perovskite
circular dichroism
circularly polarized light
photodetectors
quasi-2D perovskites
Nanoscience & Nanotechnology
Publication Status
Published
Coverage Spatial
United States
Date Publish Online
2022-02-02