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High responsivity circular polarized light detectors based on quasi two-dimensional chiral perovskite films.
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Title: | High responsivity circular polarized light detectors based on quasi two-dimensional chiral perovskite films. |
Authors: | Liu, T Shi, W Tang, W Liu, Z Schroeder, BC Fenwick, O Fuchter, MJ |
Item 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. |
Issue Date: | 22-Feb-2022 |
Date of Acceptance: | 28-Jan-2022 |
URI: | http://hdl.handle.net/10044/1/94483 |
DOI: | 10.1021/acsnano.1c09521 |
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/Funder: | Engineering & Physical Science Research Council (EPSRC) |
Funder's Grant Number: | EP/R00188X/1 |
Keywords: | 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 |
Conference Place: | United States |
Embargo Date: | 2023-02-01 |
Online Publication Date: | 2022-02-02 |
Appears in Collections: | Chemistry Faculty of Natural Sciences |