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50.4: Invited Paper: Photonic neuromorphic thin‐film transistors with ultra‐low power dissipation

We demonstrate a novel photonic neuromorphic device based on pn-junction-decorated oxide thin-film transistor that can response to broadband vision data ranging from ultraviolet to visible light region in a neuron-like fashion, as displayed in Fig. 1. Versatile synaptic behaviors such as short-term plasticity, longterm plasticity, neural potentiation and neural depression are successfully simulated. Extraction and analysis of the density of photoexcited VO-relateddefect states, activation energy for photocarrier relaxation are performed to gain deep insights into the inherent correlation between the photogenerated carrier dynamics and the synaptic behaviors.