摘要：柔性有机突触晶体管(FOSTs)由于其灵活性、生物相容性、易于加工和低复杂性而引起了广泛关注.然而,FOSTs很难在满足装置变形要求的同时保持其突触性质的机械稳定性.在此,我们通过实验发现,弯曲变形对FOSTs的突触性能(即兴奋性突触后电流(EPSC)值)的影响大于对导通电流的影响.此外,通过公式推导,我们证明了通道附近产生的弯曲诱导缺陷状态的密度显著影响突触性能.我们提出了一种使用封装层调整器件稳定段的通用方法.无调节稳定段的普通FOSTs的EPSC值在弯曲后下降了近1.5-2个数量级.相比之下,设计的柔性突触装置表现出相对稳定的EPSC.此外,设计的FOSTs表现出稳定的成对脉冲促进、长期增强和光学突触性能.此外,使用手写人工神经网络在500次弯曲循环前后基于我们的设备进行神经形态计算模拟,该设备在50个学习周期后显示出稳定的识别精度(初始状态下91.55%,500个弯曲周期后90.43%).稳定段在柔性突触晶体管中的成功应用为制造具有机械稳定性的柔性神经形态电子器件提供了一个方便和简单的思路.

摘要：Despite recent remarkable progress in multiple synaptic devices,searching for artificial synapses with new functions is still an important task in the construction of artificial neural *** parallel output functionality of photoelectric signals in artificial synaptic devices is interesting and desirable as on-chip optoelectronic interconnection technology allows the connections between neurons weighted by current and *** turn,it provides degrees of freedom and reduces circuit lead density in the design of large-scale neural ***,for the first time,a light-emitting electrochemical artificial synapse(LEEAS)based on poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene]/poly(ethylene oxide)/lithium salt blends with dual output of photoelectric signals was developed in this *** electrochemical redox reaction enables the device to achieve synaptic plasticity in biology and emulate the memory enhancement process,high-pass filtering characteristic,and classical Pavlov’s conditioned reflex *** addition,the transient luminescence intensity of the LEEAS induced by identical electric spikes exhibits a synaptic-like potentiation *** to the combination of electroluminescence(EL)and synaptic memory behavior,an LEEAS array exhibits a unique image display and storage functions that can memorize displayed *** LEEAS proposed in this work enriches the diversity of artificial synapses,promoting the diversified design and development of next-generation optoelectronic hybrid artificial neural networks.