Researchers from the Beijing Institute of Technology, Peking University and Japan's National Institute for Materials Science have developed a few-layer graphene/CrOCl/few-layer graphene van der Waals (vdW) heterostructure that functions as a broadband infrared optoelectronic synaptic device, notable for its tunable spike timing-dependent plasticity and a broad spectral response range of 520–2000 nanometers. This system addresses the limitations of conventional 2D synaptic devices, which are typically restricted to visible light due to their material bandgaps.
