Templating C₆₀ on MoS₂ Nanosheets for 2D Hybrid van der Waals p-n Nanoheterojunctions

C₆₀ and single-layer MoS₂ nanocomposites were facilely prepared via a combined solvent transfer and surface deposition (STSD) method by templating C₆₀ aggregates on 2D MoS₂ nanosheets to construct hybrid van der Waals heterojunctions. The electronic property of the hybrid nanomaterials was investigated in a direct charge transport diode device configuration of ITO/C₆₀-MoS₂ nanocomposites/Al; rewritable nonvolatile resistive switching with low SET/RESET voltage (∼3 V), high ON/OFF resistance ratio (∼4 × 10³), and superior electrical bistability (>10⁴ s) of a flash memory behavior was observed. This particular electrical property of C₆₀-MoS₂ nanocomposites, not possessed by either C₆₀ or MoS₂ nanosheets, was supposed to be due to the efficiently established C₆₀/MoS₂ p-n nanojunction, which controls the electron tunneling via junction barriers modulated by electric-field-induced polarization. Thus, our 2D templating method through STSD is promising to massively allocate van der Waals p-n heterojunctions in 2D nanocomposites, opening a window for important insights into the charge transport across the interface of organic/2D-semiconductors.