Reassessing the Validity of Space-Charge-Limited Current Measurements in Perovskite Devices with Charge-Transporting Layers: A Drift-Diffusion Simulation Including Charge Transition Levels.

ABSTRACT: Space-charge-limited current (SCLC) analysis is widely employed to extract trap densities and carrier mobility in perovskite materials. However, its validity in multilayer perovskite devices, such as those incorporating charge-transporting layers (CTLs), has remained insufficiently examined. Moreover, coupled electronic-ionic charge transport in perovskite materials, where mobile ions act as free carrier traps, remains incompletely understood. In this work, we critically reassess the applicability of SCLC measurements in multilayer perovskite devices. We develop a physics-based drift-diffusion model that explicitly incorporates ionic trap dynamics with charge transition levels, accounting for the unique ionic and electronic behaviors of halide perovskites. Through comparison between theore

SUBMITTER: Kantayasakun W 

PROVIDER: S-EPMC12368726 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature