Fig. 4: Sensing performance.
From: Dimensional reduction in Cs2AgBiBr6 enables long-term stable Perovskite-based gas sensing
Real-time response of (a) (BA)4AgBiBr8, (b) (HA)4AgBiBr8, and (c) (OA)4AgBiBr8 sensors with increasing concentrations of CO (from 10 ppb to 10 ppm). The insets show the corresponding perovskite crystal structures of each material. The black, white, purple, yellow, green, and pink balls refer to C, H, N, Bi, Ag, and Br atoms, respectively. d Comparison of response times, recovery times, and lower limits of detection (LOD) between Cs2AgBiBr6 and the three two-dimensional hybrid double perovskites (2D HDPs) is presented, with detailed measurements of response time, recovery time, and lower limit of detection provided in Supplementary Figs. 13–17. e Schematic diagram of the perovskite sensing structure. f Comparison of long-term sensing stability among the four perovskites. g Long-term time stability of CO sensors based on various perovskite materials. Reference numbers next to the data points correspond to sources listed in the main text reference list12,13,14,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59. The compiled data are detailed in Supplementary Table 4, which uses a separate reference list. Source data are provided as a Source Data file.
