Author(s): Guan, S (Guan, Shuo); Ning, YH (Ning, Yunhao); Chen, HD (Chen, Hongda); Huang, BJ (Huang, Beiju); Zhang, B (Zhang, Bao); Cheng, CT (Cheng, Chuantong)

Source: JOURNAL OF MATERIALS CHEMISTRY C DOI: 10.1039/d3tc03666a  Early Access Date: FEB 2024  

Abstract: Crystal engineering based on the additive passivation of defects in perovskite crystals is vital for improving crystal quality and tuning the optoelectronic properties of perovskites. Doping metal-organic framework materials (MOFs) into halide perovskites is one of the emerging methods to improve the optoelectronic properties of perovskites. Herein, a simple and effective method to dope metal-organic framework nanoparticles into organic-inorganic halide perovskite MAPbI3 films is proposed. Zeolite imidazole framework-8 (ZIF-8) nanoparticles can be uniformly dispersed in MAPbI3 perovskite films. ZIF-8 nanoparticles can effectively passivate the defects in the MAPbI3 perovskite layer, and the crystalline quality of the perovskite films is improved after doping with ZIF-8. Meanwhile, planar conductive photodetectors and photodetector arrays were prepared with perovskite films. A two-fold increase was observed in the photocurrent and photoresponsivity of photodetectors doped with ZIF-8, and the detectivity reached 8.01 x 1011 Jones. The photodetectors maintained long-term operation and environmental stability and could run at 1.2 V bias for 230 s without attenuation, retaining 90% of the initial photoresponsivity after being stored at 30-35 degrees C (R.H. 40%) for 14 days. In addition, we prepared perovskite photodetector arrays. The prepared 10 x 10 photodetector array realizes the detection and signal transmission of image information.

We proposed a new method to achieve efficient mixing of MAPbI3 and ZIF-8 nanoparticles that does not require heating treatment, solvent treatment, or a vacuum process. On this basis, a 10 x 10 array of planar photoconductive detectors was prepared.

Accession Number: WOS:001169788900001

Author Identifiers:

Author Web of Science ResearcherID     ORCID Number

Zhang, Bao       0000-0003-4846-0594

ISSN: 2050-7526

eISSN: 2050-7534