LAUSR

High-efficiency electromagnetic (EM) functional materials are the core building block of high-performance EM absorbers and devices, which are indispensable in various fields ranging from industrial manufacture to daily life, or even from national defense security to space exploration. Searching for high-efficiency EM functional materials and realizing high-performance EM devices remain to be great challenges. Herein, a simple solution-process is developed to rapidly grow gram-scale organic-inorganic (MAPbX3 , X = Cl, Br, I) perovskite microcrystals. They exhibit excellent EM response in multi bands covering microwave, visible light, and X-ray. Among them, outstanding microwave absorption performance with multiple absorption bands can be achieved, and their intrinsic EM properties can be tuned by adjusting polar group. An ultra-wideband (UWB) bandpass filter with high suppression level of -71.8 dB in the stopband in the GHz band, self-powered photodetectors with tunable broadband or narrowband photoresponse in visible light band, and a self-powered X-ray detector with high sensitivity of 3560 μC Gyair -1 cm-2 in X-ray band have been designed and realized by precisely regulating the physical features of perovskite and designing novel planar device structure. These findings open a door toward developing high-efficiency EM functional materials for realizing high-performance EM absorbers and devices. This article is protected by copyright. All rights reserved.