| Title |
B-site mixing effects in hybrid perovskites: phase transitions and dielectric response of MAPb1-xSnxBr3 / |
| Authors |
Rimkus, Gabrielius ; Balčiūnas, Sergejus ; Petrosova, Hanna R ; Kucheriv, Olesia I ; Lemežis, Rokas ; Klimavičius, Vytautas ; Kalendra, Vidmantas ; Banys, Jūras ; Gural’skiy, Il’ya A ; Šimėnas, Mantas |
| DOI |
10.1021/acs.chemmater.4c03381 |
| Full Text |
|
| Is Part of |
Chemistry of materials.. Washington : American Chemical Society. 2025, vol. 37, iss. 3, p. 1314-1320.. ISSN 0897-4756. eISSN 1520-5002 |
| Keywords [eng] |
cations ; differential scanning calorimetry ; insulators ; perovskites ; phase transitions |
| Abstract [eng] |
Ion-mixing is a highly effective strategy for tuning the performance and stability of photovoltaic devices based on hybrid perovskites. Despite many works concentrating on the A-and X-site mixing effects, a comprehensive study on the effects of B-site mixing on the structural and dynamic properties of MA-based perovskites is still absent. In this work, we investigate the structural and dynamic properties of mixed lead-tin halide perovskites MAPb1-xSnxBr3 using a multitechnique experimental approach including differential scanning calorimetry, dielectric spectroscopy, and nuclear quadrupole resonance experiments. We map the phase diagram of this system, which reveals that B-site mixing slightly stabilizes the cubic phase and affects the MA cation dynamics and ordering, although the observed effects are less prominent compared with A-and X-site mixing. Our results provide insights into the complex interplay of structural and dynamic properties in mixed-metal perovskites contributing to their potential optimization for photovoltaic applications. |
| Published |
Washington : American Chemical Society |
| Type |
Journal article |
| Language |
English |
| Publication date |
2025 |
| CC license |
|
