Premium
A High‐Performance Flexible Broadband Photodetector Based on Graphene–PTAA–Perovskite Heterojunctions
Author(s) -
Zhou Guigang,
Sun Rui,
Xiao Yan,
Abbas Ghulam,
Peng Zhengchun
Publication year - 2021
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.202000522
Subject(s) - materials science , responsivity , photodetector , perovskite (structure) , photodetection , optoelectronics , graphene , specific detectivity , heterojunction , absorption (acoustics) , halide , nanotechnology , composite material , chemical engineering , inorganic chemistry , chemistry , engineering
Organometal halide perovskites (CH 3 NH 3 PbI 3− x Cl x ) have received considerable attention in the field of optoelectronics due to their strong light absorption and long carrier lifetime. However, the performance such as response speed, responsivity, and stability of such detectors still need to be improved. In this paper, a flexible photodetector (PD) composed of multilayered structure of graphene–poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA)–perovskite‐poly(methyl methacrylate) (PMMA) is proposed. The PD can detect a wide wavelength range from ultraviolet to near infrared. The PD shows a high detectivity of ≈10 13 Jones and a responsivity of 10 5 A W −1 at 360 nm. More importantly, the device also shows a high bending durability, fast response time, and good stability in air due to the protection of the PMMA layer. The facile and low‐cost fabrication of the flexible perovskite‐based hybrid photodetector indicates the mass production for the potential application in sensitive broadband photodetection.