Fig. 1: Schematic diagram of dimensional reduction in alkylamine-assisted 3D double perovskite to achieve long-term stable perovskite-based CO sensing.
From: Dimensional reduction in Cs2AgBiBr6 enables long-term stable Perovskite-based gas sensing

The black, white, purple, blue, yellow, green, and pink balls represent C, H, N, Cs, Bi, Ag, and Br atoms, respectively. T denotes temperature and hv represents incident light.