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

Xinyuan Zhang; Lina Li; Chengmin Ji; Xitao Liu; Qing Li; Kun Zhang; Yu Peng; Maochun Hong; Junhua Luo

doi:10.1093/nsr/nwab044

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

Natl Sci Rev. 2021 Mar 16;8(10):nwab044. doi: 10.1093/nsr/nwab044. eCollection 2021 Oct.

Authors

Xinyuan Zhang¹, Lina Li¹, Chengmin Ji¹, Xitao Liu¹, Qing Li², Kun Zhang³, Yu Peng¹, Maochun Hong¹, Junhua Luo¹

Affiliations

¹ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
² University of Chinese Academy of Sciences, Beijing 100049, China.
³ School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China.

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.

Keywords: high polarization sensitivity; hybrid perovskite; polarization-sensitive photodetection; single-crystalline heterostructure.