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Rational design of high-quality 2D/3D perovskite heterostructure crystals for record-performance polarization-sensitive photodetection.

Authors :
Zhang X
Li L
Ji C
Liu X
Li Q
Zhang K
Peng Y
Hong M
Luo J
Source :
National science review [Natl Sci Rev] 2021 Mar 16; Vol. 8 (10), pp. nwab044. Date of Electronic Publication: 2021 Mar 16 (Print Publication: 2021).
Publication Year :
2021

Abstract

Polarization-sensitive photodetection is central to optics applications and has been successfully demonstrated in photodetectors of two-dimensional (2D) materials, such as layered hybrid perovskites; however, achieving high polarization sensitivity in such a photodetector remains extremely challenging. Here, for the first time, we demonstrate a high-performance polarization-sensitive photodetector using single-crystalline 2D/3D perovskite heterostructure, namely, (4-AMP)(MA) <subscript>2</subscript> Pb <subscript>3</subscript> Br <subscript>10</subscript> /MAPbBr <subscript>3</subscript> (MA = methylammonium; 4-AMP = 4-(aminomethyl)piperidinium), which exhibits ultrahigh polarization sensitivity up to 17.6 under self-driven mode. To our knowledge, such a high polarization selectivity has surpassed all of the reported perovskite-based devices, and is comparable to, or even better than, the traditional inorganic heterostructure-based photodetectors. Further studies reveal that the built-in electric field formed at the junction can spatially separate the photogenerated electrons and holes, reducing their recombination rate and thus enhancing the performance for polarization-sensitive photodetection. This work provides a new source of polarization-sensitive materials and insights into designing novel optoelectronic devices.<br /> (© The Author(s) 2021. Published by Oxford University Press on behalf of China Science Publishing & Media Ltd.)

Details

Language :
English
ISSN :
2053-714X
Volume :
8
Issue :
10
Database :
MEDLINE
Journal :
National science review
Publication Type :
Academic Journal
Accession number :
34858607
Full Text :
https://doi.org/10.1093/nsr/nwab044