Tunable White Light Emission in a Zero‐Dimensional Organic–Inorganic Metal Halide Hybrid with Ultra‐High Color Rendering Index
Gaomin Song, Zhongyuan Li, Pifu Gong, Rong‐Jun Xie, Zheshuai Lin
Abstract
Abstract Organic–inorganic metal halide hybrids (OIMHs) with broadband white light (WL) emission are considered as a new type of rare‐earth‐free phosphors. Herein, eco‐friendly and stable Sn(IV) is selected as the B ‐site inorganic cation to synthesize a 0D lead‐free OIMH (C 5 N 2 H 14 )SnCl 6 , in which the isolated [SnCl 6 ] 2− octahedra are separated by large organic [C 5 N 2 H 14 ] 2+ cations. Under different excitations, this compound exhibits warm white emission with a tunable color rendering index (CRI) from 80 to 97, the highest value among all known OIMHs, owing to the synergistic effect of [C 5 N 2 H 14 ] 2+ and [SnCl 6 ] 2− octahedra. This work presents a new strategy toward the WL materials with ultra‐high CRI by co‐regulating organic cations and inorganic polyhedra.