Fig. 6
From: Identifying Pb-free perovskites for solar cells by machine learning
a–d Present cubic and orthorhombic crystal structures and corresponding band structures of Rb2AgBiBr6, Rb2AgInBr6, Cs2TlBiBr6, and Rb2TlGaBr6, respectively. e Schematic illustration of a band diagram for halide double perovskite
