Xuegang Chen

Comprehensive study of carrier dynamics in gradient hydrogenated NdNiO3 using broadband ultrafast transient reflectivity spectroscopy

Hydrogenation of perovskite rare-earth nickelates induces giant lattice distortions and enhanced tilting/rotation of NiO6 octahedra, enabling a room-temperature metal–insulator transition. However, unraveling the couplings between ion, electron, and lattice degrees of freedom int...

Manipulation of Photoresponse via Defect-Level Excitations in Metal–Insulator–Semiconductor-Type Two-Dimensional Heterostructure for Optoelectronic Logic Gates

Abstract In recent years, effective carrier–exciton conversion and defect engineering in tunneling diodes based on metal–insulator–semiconductor (MIS) van der Waals heterostructures have attracted extensive research interest in modulating optoelectronic device performance. Effect...