Super-Flexible, Transparent Synaptic Transistors Based on Pullulan for Neuromorphic Electronics

With the development of artificial intelligence, super-flexibility and transparent neuromorphic electronics are gradually showing high application value in the fields of wearable see-through electronics and biomedical applications. However, it is still a huge problem to realize synaptic devices with super-flexibility and transparent characteristics. Here, an organic synaptic transistor (OST) based on natural pullulan is fabricated with super-flexibility and high transmittance ( $\sim $ 83.3%), which enables it to achieve conformal and non-destructive attachment to arbitrary-shaped objects without affecting viewing. Various synaptic behaviors are successfully simulated even under extreme bending, showing outstanding mechanical stability. Moreover, our OSTs can achieve ultrarapid degradation in ambient water, which will reduce the generation of electronic waste. This work provides a guide for the development of super-flexible and transparent neuromorphic electrons, demonstrating a great step toward next-generation artificial intelligence.