Optoelectronic synapses that integrate and process light and electric signals simultaneously received giant attention for the development of artificial visual system. However, to mimic robust perception and processing ability of biological vision demands exceptional photoresponse and tunable plasticity of the optoelectronic synaptic units. Herein, we demonstrated a Methylammonium (MA) halide-doped perovskite artificial synapse. The introduction of MA halide additives into formamidinium lead iodide (FAPbI₃) can effectively improve the film morphology and crystallinity, leading to a wider regulatory range of synaptic plasticity. The effect of light irradiation on shaping synaptic plasticity was revealed to realize important synaptic functions. With the assistance of light stimuli, high-order learning behaviors have been achieved, including dynamic logic operation and conditioned reflex. A higher pattern recognition accuracy (88.2%) of handwritten digits was achieved in simulation. Moreover, the correlation between light irradiation and the hybrid perovskite-based artificial synapse can be utilized to perceive environmental change and to tune information processing efficiency. These results provide a new strategy for constructing future artificial intelligent system.

同时整合和处理光和电信号的光电突触在人工视觉系统的发展中受到了极大的关注。然而，要模仿生物视觉的强大感知和处理能力，需要光电突触单元具有出色的光响应和可调可塑性。在此，我们展示了一种甲基铵 (MA) 卤化物掺杂的钙钛矿人工突触。将 MA 卤化物添加剂引入甲脒碘化铅 (FAPbI ₃) 可以有效改善薄膜的形态和结晶度，从而导致更广泛的突触可塑性调节范围。揭示了光照射对塑造突触可塑性的影响，以实现重要的突触功能。在光刺激的辅助下，实现了高阶学习行为，包括动态逻辑运算和条件反射。在模拟中实现了更高的手写数字模式识别准确率（88.2%）。此外，光照射与基于混合钙钛矿的人工突触之间的相关性可用于感知环境变化和调整信息处理效率。这些结果为构建未来的人工智能系统提供了新的策略。