3 papers
cond-mat.mtrl-sci2026
Discovery of Ferroelectric Twin Boundaries in a Photoactive Halide Perovskite
Weilun Li, Qimu Yuan, Michael B. Johnston +1
Halide perovskites have emerged as promising materials for next-generation photovoltaics, laser sources and X-ray detectors. There is intense debate as to whether some photoactive…
cond-mat.mtrl-sci2025
Direct observation of cation-dependent polarisation switching dynamics in fluorite ferroelectrics
Kousuke Ooe, Yufan Shen, Kazuki Shitara +4
Fluorite ferroelectrics are exciting candidates for next-generation non-volatile memory devices because their unique ferroelectric mechanism, which arises from unconventional oxyge…
cond-mat.mtrl-sci2025
Ruddlesden-Popper defects act as a free surface: role in formation and photophysical properties of CsPbI3
Weilun Li, Qimu Yuan, Yinan Chen +5
The perovskite semiconductor, CsPbI3, holds excellent promise for solar cell applications due to its suitable bandgap. However, achieving phase-stable CsPbI3 solar cells with high…