Artificial photonic synapses, designed for emerging photo-interactive neuro-computing technologies, have been developed with area-density-tunable perovskite nano-cone arrays within a self-assembled block copolymer (BCP). These arrays, part of a field effect transistor with a floating gate of photoreceptive perovskite crystals, can trap and release electric charges, exhibiting functions like paired-pulse facilitation and long-term potentiation. Crafted using an off centered spin coating process, the perovskite floating gate emulates the human retina's position-dependent spatial distribution of cones. Arranged in 60 × 12 arrays, the synapse devices serve dual functions as receptors and synapses, demonstrating AI capabilities with pattern recognition accuracy up to 90%, as tested with the Modified National Institute of Standards and Technology handwritten digit pattern recognition test.
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