Open AccessA Perovskite‐Based Photodetector with Enhanced Light Absorption, Heat Dissipation, and Humidity Stability
Author(s) -
Deng Wen,
Zhou Yihao,
Tat Trinny,
Xu Shumao,
Jin Huaimin,
Li Wen,
Chun Fengjun,
Yan Cheng,
Yang Weiqing,
Chen Jun
Publication year - 2021
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202100123
Subject(s) - materials science , photocurrent , humidity , perovskite (structure) , optoelectronics , photodetector , quantum efficiency , relative humidity , absorption (acoustics) , nanocrystal , composite material , nanotechnology , chemical engineering , meteorology , physics , engineering
The manipulation of microstructure from the growth stage is desired in perovskite materials to improve the environmental stability and enhance the perovskite‐based device performance. Herein, the traditional challenges of self‐assembly of multifunctional perovskite nano/microwires (MWs) are overcome by developing a new nanocrystal strategy to intelligently build self‐inlaid jagged CsPbBr 3 MWs for photodetectors (PDs) with a combination of improved light‐harvesting capability, heat dissipation, and humidity stability. With a collection of compelling features, the as‐constructed PDs deliver an ultralow dark current of 10 −12 A, excellent response speed of 26 ms, superior detectivity ( D *) of 1.9 × 10 12 Jones, and peak external quantum efficiency of 939%. Furthermore, attributing to the interlocking–protecting effect of the self‐inlaid monocrystalline CsPbBr 3 nanostructure, the CsPbBr 3 MW PDs display improved stability against heat and humidity with promoted heat dissipation ability at 60 °C and 97% photocurrent retention under 80% humidity treatment for 200 min, respectively. This work represents a significant advancement in developing high‐performance and environmentally stable PDs.