Issue 19, 2024

Mechanochemically-induced glass formation from two-dimensional hybrid organic–inorganic perovskites


Hybrid organic–inorganic perovskites (HOIPs) occupy a prominent position in the field of materials chemistry due to their attractive optoelectronic properties. While extensive work has been done on the crystalline materials over the past decades, the newly reported glasses formed from HOIPs open up a new avenue for perovskite research with their unique structures and functionalities. Melt-quenching is the predominant route to glass formation; however, the absence of a stable liquid state prior to thermal decomposition precludes this method for most HOIPs. In this work, we describe the first mechanochemically-induced crystal-glass transformation of HOIPs as a rapid, green and efficient approach for producing glasses. The amorphous phase was formed from the crystalline phase within 10 minutes of ball-milling, and exhibited glass transition behaviour as evidenced by thermal analysis techniques. Time-resolved in situ ball-milling with synchrotron powder diffraction was employed to study the microstructural evolution of amorphisation, which showed that the crystallite size reaches a comminution limit before the amorphisation process is complete, indicating that energy may be further accumulated as crystal defects. Total scattering experiments revealed the limited short-range order of amorphous HOIPs, and their optical properties were studied by ultraviolet-visible (UV-vis) spectroscopy and photoluminescence (PL) spectroscopy.

Graphical abstract: Mechanochemically-induced glass formation from two-dimensional hybrid organic–inorganic perovskites

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Article information

Article type
Edge Article
06 Feb 2024
09 Apr 2024
First published
19 Apr 2024
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2024,15, 7198-7205

Mechanochemically-induced glass formation from two-dimensional hybrid organic–inorganic perovskites

C. Ye, G. I. Lampronti, L. N. McHugh, C. Castillo-Blas, A. Kono, C. Chen, G. P. Robertson, L. A. V. Nagle-Cocco, W. Xu, S. D. Stranks, V. Martinez, I. Brekalo, B. Karadeniz, K. Užarević, W. Xue, P. Kolodzeiski, C. Das, P. Chater, D. A. Keen, S. E. Dutton and T. D. Bennett, Chem. Sci., 2024, 15, 7198 DOI: 10.1039/D4SC00905C

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