Gratulujemy prof. Jarosławowi Serafińczukowi i współautorom opublikowania pracy "Giant Band Gap Narrowing under Hydrostatic Pressure in (4FP)2SnI4 Halide Perovskite" w czasopiśmie The Journal of Physical Chemistry Letters (IF: 6,1).

Giant Band Gap Narrowing under Hydrostatic Pressure in (4FP)2SnI4 Halide Perovskite

Rafał Bartoszewicz, Jakub Ziembicki, Ewelina Zdanowicz, Artur P. Herman, Jarosław Serafińczuk, Jesús Sánchez-Diaz, Samrat Das Adhikari, Iván Mora-Seró, Robert Kudrawiec

One of the most intriguing properties of hybrid halide perovskites is their structural softness. The interplay between organic and inorganic sublattices leads to a multitude of physical phenomena that are not observed in conventional semiconductors such as III−V materials. One among these is the exceptional band gap tunability under hydrostatic pressure. In this context, tin-based perovskites exhibit a more pronounced effect than their lead-based counterparts. Here, we report on one of the largest band gap tunabilities in this material family. The studied material, layered tin-based (4FP)2SnI4 perovskite, exhibits an exceptionally strong pressure sensitivity, with a band gap shift of up to −160 meV/GPa at room temperature. Combined experimental and computational studies reveal that its band gap dependence on pressure remains linear in the 0−5 GPa range, making (4FP)2SnI4 highly attractive for pressure-sensor applications.

J. Phys. Chem. Lett. 2025, 16, 6372−6377, DOI: 10.1021/acs.jpclett.5c00903