Inorganic Halide Perovskite Electromagnetic Wave Absorption System with Ultra‐Wide Absorption Bandwidth and High Thermal‐Stability. (29th December 2022)

• Record Type: Journal Article
• Authors: Zhang, Zhi; Xiong, Ziming; Yao, Yao; Shi, Xiaomin; Zhang, Pin; Yang, Zhiqian; Zhao, Qing; Zhou, Wenke
• Is Part Of: Advanced Electronic Materials. Volume 9:Number 3(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-12-29
• Subjects: conductive network -- excellent absorption performance -- high thermal‐stability -- inorganic perovskite; Materials -- Electric properties -- Periodicals; Materials science -- Periodicals; Magnetic materials -- Periodicals; Electronic apparatus and appliances -- Periodicals; 537
• DOI: 10.1002/aelm.202201179
• Languages: English
• ISSNs: 2199-160X

Abstract

Abstract: Halogen perovskite, a novel semiconductor material that has gained momentum in the energy sector, has also emerged in the field of electromagnetic wave (EMW) protection. Inorganic halogen perovskites are expected to perform well owing to their excellent stability and dielectric properties. In this study, a CsPbBr3 /Carbon nanotubes (CNTs) composite is designed using a convenient antisolvent method. In addition to an ultrawide absorption bandwidth (5.56 GHz) and ultrahigh absorption strength (|Reflection loss| = 51.74 dB), the composite shows excellent thermal stability and environmental tolerance. In an air environment, its EMW‐absorbing performance can be maintained at a high level at a temperature below 400 °C. CNTs build an efficient conductive network between CsPbBr3 to enhance the conduction loss of the composite, while it brings more defects and vacancies to the surface of CsPbBr3 to form electrical polarization centers which improving the polarization loss of the composite. This is the first study of the application of inorganic halogen perovskites in the field of EMW absorption. The excellent EMW‐absorbing performance and stability of CsPbBr3 /CNTs demonstrate the great potential of inorganic halogen perovskites in the field of EMW absorption and provide a valuable reference and feasible strategy for regulating and controlling the EMW‐absorbing performance of perovskite materials. Abstract : CNTs build an efficient conductive network to enhance the conduction loss, while it brings more defects and vacancies to CsPbBr3 to form electrical polarization centers which improving the polarization loss. The champion effective absorption bandwidth is promoted to 5.56 GHz in 1.91 mm. This work demonstrates great potential of inorganic halogen perovskites in the field of electromagnetic wave absorption.