Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs2InBr5(H2O)

Wanyin Ge; Maohao Yang; Masaki Saruyama; Kenshi Matsumoto; Ryota Sato; Haruka Takekuma; Ryo Takahata; Toshiharu Teranishi

doi:10.1039/D4CE00204K

Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs₂InBr₅(H₂O)†

Wanyin Ge,

*^a Maohao Yang,^a Masaki Saruyama,

^b Kenshi Matsumoto,^b Ryota Sato,

^b Haruka Takekuma,^b Ryo Takahata^b and Toshiharu Teranishi

*^b

Author affiliations

* Corresponding authors

^a School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi 710021, P. R. China
E-mail: gewanyin@sust.edu.cn

^b Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
E-mail: teranisi@scl.kyoto-u.ac.jp

Abstract

The crystallization behavior of halide perovskites is of great significance. Fractal structures, featured by self-similarity between local morphology and global structures, have consistently captivated scientists' interest across diverse disciplines. In this study, we realized the fractal patterns in lead-free zero-dimensional (0D) Cs₂InBr₅(H₂O) perovskites. By depositing saturated precursor droplets on silicon or glass substrates, we initiated nucleation and crystallization of 0D Cs₂InBr₅(H₂O) crystals on the liquid's upper surface. As the solution evaporated, the remaining high-concentration solution formed self-similar fractal patterns beneath the Cs₂InBr₅(H₂O) crystals. This anisotropic growth mechanism imparted a unique self-assembly behavior to 0D Cs₂InBr₅(H₂O). Additionally, X-ray diffraction results confirmed distinct preferential orientations of the fractal patterns. The findings of this work provide valuable insights into the controlled crystallization behavior of lead-free perovskites and inspire further exploration of novel optoelectronic properties arising from such a unique fractal pattern.

$Graphical abstract: Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs2InBr5(H2O)$

Supplementary files

Article information

DOI: https://doi.org/10.1039/D4CE00204K
Article type: Paper
Submitted: 01 Mar 2024
Accepted: 15 Apr 2024
First published: 16 Apr 2024

Download Citation

CrystEngComm, 2024, Advance Article

Permissions

Request permissions

Evolution of fractal patterns in lead-free zero-dimensional perovskite Cs₂InBr₅(H₂O)

W. Ge, M. Yang, M. Saruyama, K. Matsumoto, R. Sato, H. Takekuma, R. Takahata and T. Teranishi, CrystEngComm, 2024, Advance Article , DOI: 10.1039/D4CE00204K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

CrystEngComm