Abstract
In the era of artificial intelligence, the photonic artificial synapses that are capable of light detecting and information storage are attracting much attention. The complex device configuration and high energy consumption are two main challenges. Here, a flexible polymer-based optical synapse for infrared light detection is fabricated to emulate human synaptic photo-plasticity in the absence of applied voltage. The mechanism investigation of self-powered property demonstrated that both localized electric field of the PET substrate and high dielectric constant of PBTT contribute to the spontaneous exciton dissociation. Moreover, array imaging and data encryption were achieved by modulating light for the flexible devices, which exhibited excellent mechanical flexibility and long-term air stability. Thus, this work provides an idea to develop self-powered artificial synapses for infrared light detection.
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