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


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)2Pb3Br10/MAPbBr3 (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.

SUBMITTER: Zhang X 

PROVIDER: S-EPMC8566186 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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

Zhang Xinyuan X   Li Lina L   Ji Chengmin C   Liu Xitao X   Li Qing Q   Zhang Kun K   Peng Yu Y   Hong Maochun M   Luo Junhua J  

National science review 20210316 10


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)<sub>2</sub>Pb<sub>3<  ...[more]

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