光电双模态感知的有机晶体管及人工突触性能OA

With the rapid advancement of artificial intelligence and neuromorphic computing,organic field-effect transistors have emerged as promising building blocks for neuromorphic hardware owing to their tunable electrical properties.However,conventional organic neuromorphic devices typically provide only a single synaptic modality,limiting their applicability to multimodal perception and complex information processing.Here,we presented a photoelectric dual-modality organic synaptic transistor that employs an IDTBT/polystyrene(PS)composite dielectric.Under visible illumination,the device underwent a reversible functional transition from a switching transistor to a neuromorphic synapse,characterized by an expansion of the hysteresis window by 7.9 V,a 26-fold increase in conductance and a 150％synaptic enhancement ratio.Systematic electrical and synaptic characterizations under different operating states indicate that the device response is governed by the synergistic interplay between photogenerated carrier modulation in the channel and charge trapping in the electret.By combining high-mobility charge transport with light-controlled trapping dynamics,this approach enables light-programmable synaptic behavior without compromising transistor performance,offering a new device paradigm for integrated sensing,memory and computing in multimodal neuromorphic platforms.