Extended Data Fig. 6: Characterization of the effect of Bi doping on Cs2AgxNa1−xInCl6.
From: Efficient and stable emission of warm-white light from lead-free halide double perovskites
a, High-resolution single-crystal XRD of the (111) peaks of Cs2Ag0.60Na0.40InCl6 with and without Bi doping. b, Absorption spectra of various materials with and without Bi doping for wavelengths of 500–950 nm. c, PLQY results. d, Photoluminescence lifetime. e, Comparison of the total density of states (DOS) between pure and Bi-doped Cs2AgInCl6. The inset shows the band alignment of pure and Bi-doped Cs2AgInCl6. CBM, conduction band minimum; VBM, valence band maximum. The small shallow peak marked by an arrow is derived from the Bi 6s states, which hybridize with the Ag 4d states. f, Partial density of states (PDOS) of Bi-doped Cs2AgInCl6.
