White light emission in 0D halide perovskite [(CH3)3S]2SnCl6·H2O crystals through variation of doping ns2 ions

Abstract

With the rapid development of white LEDs, the research of new and efficient white light emitting materials has attracted increasing attention. Zero dimensional (0D) organic–inorganic hybrid metal halide perovskites with superior luminescent property are promising candidates for LED application, due to their abundant and tailorable structure. Herein, [(CH3)3S]2SnCl6·H2O is synthesized as a host for dopant ions Bi3+ and Sb3+. The Sb3+ doped, or Bi3+/Sb3+ co-doped, [(CH3)3S]2SnCl6·H2O has a tunable optical emission spectrum by means of varying dopant ratio and excitation wavelength. As a result, we can achieve single-phase materials suitable for emission ranging from cold white light to warm white light. The intrinsic mechanism is examined in this work, to clarify the dopant effect on the optical properties. The high stability of title crystalline material, against water, oxygen and heat, makes it promising for further application. Graphical Abstract

Optical Property Regulation through Host–Guest Interaction in a Zero-Dimensional Zr Chloride

“…A 2 BX 6 type is a kind of typical 0D perovskite (A = monovalent cations, B = tetravalent metal ions, and C = halogen ions) . For example, A 2 SnCl 6 (e.g., Cs 2 SnCl 6 , (NH 4 ) 2 SnCl 6 , [(CH 3 ) 3 S] 2 SnCl 6 ·H 2 O and [(CH 3 ) 4 N] 2 SnCl 6 , ) stand out as popular host materials capable of accommodating various guest ions for luminescence applications. When doped with ns 2 electrons (e.g., Sb 3+ , Bi 3+ , and Te 4+ ), A 2 SnCl 6 can exhibit diverse luminescent colors attributing to the unique electron configurations of these dopants, which provides the opportunity for color combination through multidoping. − Recently, Zr-based halides perovskites A 2 ZrX 6 have emerged as promising alternatives with interesting intrinsic emissions. , By element doping, the optical properties of A 2 ZrX 6 can be easily controlled.…”

Chemically driven dimensionality modulation of hybrid tin(ii) halide perovskite microcrystals

“…18,20 It should be mentioned that the octahedral tin chloride configuration is also stable for Sn( iv ) ions. 21 Different inorganic and organic tin( ii / iv ) halide compounds and dimensionalities are summarized in Table 1.…”