2024/10/09 by Alessandra Ames, Frederico B. Sousa, Ames, Alessandra +23 · 3 citations
Chemical Engineering · Physics and Astronomy · #Catalysis and Oxidation Reactions #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Photorefractive and Nonlinear Optics
paper · pdf · doi:10.48550/arxiv.2410.07042
openalex publication_date 2024/10/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/03
Two-dimensional heterostructures have been crucial in advancing optoelectronic devices utilizing van der Waals materials. Semiconducting transition metal dichalcogenide monolayers, known for their unique optical properties, offer extensive possibilities for light-emitting devices. Recently, a memory-driven optical device, termed a Mem-emitter, was proposed using these monolayers atop dielectric substrates. The successful realization of such devices heavily depends on selecting the optimal substrate. Here, we report a pronounced memory effect in a MoSe2/clinochlore device, evidenced by electric hysteresis in the intensity and energy of MoSe2 monolayer emissions. This demonstrates both population-driven and transition-rate-driven Mem-emitter abilities. Our theoretical approach correlates these memory effects with internal state variables of the substrate, emphasizing that clinochlore layered structure is crucial for a robust and rich memory response. This work introduces a novel two-dimensional device with promising applications in memory functionalities, highlighting the importance of alternative insulators in fabricating van der Waals heterostructures.