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
Locating the Atoms at the Hard-soft Interface of Gold Nanoparticles
Weilun Li, Bryan D. Esser, Wenming Tong +7
Surface structure affects the growth, shape and properties of nanoparticles. In wet chemical syntheses, metal additives and surfactants are used to modify surfaces and guide nanocr…
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…