Heating-up synthesis of cesium bismuth bromide perovskite nanocrystals with tailored composition, morphology, and optical properties

Abstract

Lead-free cesium bismuth bromide perovskite nanocrystals are synthesized via the heating-up method with tailored morphology and optical properties.

An All‐Solid‐State Bromide‐Ion Battery

“…Prior to discharging, two peaks attributed to the BiBr 3 appeared, at 159.9 and 164.8 eV and there was no obvious metallic Bi peak. The peaks attributed to the Bi metal is close to the reported values of the Cs 3 Bi 2 Br 9 (Bi 3+ ) [25] . Following discharging, metallic Bi peaks appeared at 157.0 and 162.2 eV while the intensities of the BiBr 3 peaks were decreased.…”

“…The peaks attributed to the Bi metal is close to the reported values of the Cs 3 Bi 2 Br 9 (Bi 3 + ). [25] Following discharging, metallic Bi peaks appeared at 157.0 and 162.2 eV while the intensities of the BiBr 3 peaks were decreased. The peaks attributed to the Bi metal is close to the reported values.…”

Recent Advances and Opportunities of Lead-Free Perovskite Nanocrystal for Optoelectronic Application

“…Despite the success of Cs 3 Bi 2 X 9 NCs synthesis, the optical performances, especially PLQY, seem to be inferior than that of Pb-based counterparts [138]. Some recent studies in this field have shown that Cs 3 Bi 2 X 9 NCs with high PLQY can be produced through careful manipulation of surface ligands and solvents [139]. For example, Yang and coworkers synthesized Cs 3 Bi 2 X 9 NCs through a ligandfree facile reaction at RT and the resulting Cs 3 Bi 2 Br 9 NCs exhibited a low PLQY (~0.2%) because of the ultrafast trapping process [131].…”

The Polymorphic Nature of M3BiBr6 Halides (M=Cs, Rb) and their Reversible Intercalation with Water to Isomorphous Hydrates at Room Temperature

“…Especially materials based on bismuth halides are investigated, because they are expected to be non‐toxic, [2] however, some of them proved to be better suited as luminescent materials [3] . Among the many compounds discussed are alkali metal salts of type M 3 Bi X 6 ( M =Rb, Cs; X =Br, I), which are sometimes referred to as “zero‐dimensional perovskites”, because of their isolated [Bi X 6 ] octahedra, or as “double halide perovskites“ [2–5] …”

“…[3] Among the many compounds discussed are alkali metal salts of type M 3 BiX 6 (M = Rb, Cs; X = Br, I), which are sometimes referred to as "zero-dimensional perovskites", because of their isolated [BiX 6 ] octahedra, or as "double halide perovskites". [2][3][4][5] One of the major issues in the application of bismuth halide absorber materials is their inherent tendency to hydrolyze. The binary bismuth trihalides react with liquid or gaseous water to form oxide halides, preferably BiOX.…”