Benign‐by‐Design Solventless Mechanochemical Synthesis of Three‐, Two‐, and One‐Dimensional Hybrid Perovskites

Abstract

Organic–inorganic hybrid perovskites have attracted significant attention owing to their extraordinary optoelectronic properties with applications in the fields of solar energy, lighting, photodetectors, and lasers. The rational design of these hybrid materials is a key factor in the optimization of their performance in perovskite‐based devices. Herein, a mechanochemical approach is proposed as a highly efficient, simple, and reproducible method for the preparation of four types of hybrid perovskites, which were obtained in large amounts as polycrystalline powders with high purity and excellent optoelectronics properties. Two archetypal three‐dimensional (3D) perovskites (MAPbI3 and FAPbI3) were synthesized, together with a bidimensional (2D) perovskite (Gua2PbI4) and a “double‐chain” one‐dimensional (1D) perovskite (GuaPbI3), whose structure was elucidated by X‐ray diffraction.

All-Inorganic CsPbBr3 Nanocrystals: Gram-Scale Mechanochemical Synthesis and Selective Photocatalytic CO2 Reduction to Methane

“…[20][21][22] It is therefore important to develop alternative greener approaches with scale-up capability such as mechanochemical synthesis, also known as ball milling, that avoids or minimizes the use of organic solvents. [23][24][25][26][27] A few reports have covered the mechanochemical synthesis of organicinorganic halide perovskites, [23][24][25] double halide perovskites, 26 and CsPbBr 3 quantum dots. 27 Further progress is still needed on the mechanochemical synthesis of all-inorganic halide perovskite nanocrystals such as CsPbBr 3 with control over size and morphology.…”

Two-Dimensional Halide Perovskites for Emerging New- Generation Photodetectors

“…The enlarged parts represent the corresponding TEM images of CH 3 NH 3 PbBr 3 nanocrystals. (f) Scheme of the mechanochemical synthesis for the 3D, 2D and 1D perovskites [54].…”

“…Jodlowski et al reported the preparation of a bi-dimensional (i.e. 2D) perovskite (Gua 2 PbI 4 ) using a mechanochemical synthesis approach (Figure 3f) [54]. The precursors of PbI 2 and MAI were mixed in a 1:1 molar ratio inside a ball mill under ambient conditions to produce polycrystalline powders.…”

“…The precursors of PbI 2 and MAI were mixed in a 1:1 molar ratio inside a ball mill under ambient conditions to produce polycrystalline powders. This synthesis process featured solventless environment, swiftness, simplicity, reproducibility and promising potential for exploring the alternative design of various perovskite nanostructures [54].…”

Solventless Mechanochemical Synthesis of Phase Pure Syngenite

“…Mechanochemistry has proven to present a simple, reliable and effective route to achieve nanostructured materials and evolved into a highly popular synthesis method in various fields. Consequently, recently a series of review articles on the subject has been published [11–16] and its advantages in enantioselective synthesis [17] , 17 O labelling [18] , ettringite synthesis [19] , MOF preparation [20] , pharmaceutical synthesis [21] and hybrid perovskites [22] were demonstrated. Other works highlighted that increased product selectivity is achievable [23] or focused more on the mechanochemical process itself [24,25] .…”