What is it about?

See my short YouTube talks on this and other research works by clicking on the link under 'Resources' on the right ➡️➡️ Here, we demonstrate how symmetry breaking in this emerging 'perovskite-inspired material' (https://iopscience.iop.org/article/10.1088/1361-6528/abcf6d) can lead to lattice polarisation.

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Why is it important?

This work is important because it demonstrates that mixed-metal chalcohalides may provide a novel class of materials for solution-processed optoelectronic and ferroelectric materials.

Perspectives

This work demonstrates the consequences that symmetry-breaking due to ns2-cation (Lone-pair active) species can have in emerging semiconductors.

Seán Ronan Kavanagh
Imperial College London

Read the Original

This page is a summary of: Hidden spontaneous polarisation in the chalcohalide photovoltaic absorber Sn2SbS2I3, Materials Horizons, January 2021, Royal Society of Chemistry, DOI: 10.1039/d1mh00764e.
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