Bioinspired Vertical Transistors from Artificial Synapse to Neuromorphic System

Neuromorphic devices emulating the brain functionality have achieved a substantial scientific leap in the last decade. Among them, neuromorphic vertical transistors have attracted extensive interests due to their abilities of mitigating physical channel-length limitations and developing new-generation 3D integrated electronics. In this review, the recent advances and major trends in the field of emerging neuromorphic devices based on vertical transistor are focused on. It has been started with a brief introduction of biological nervous system and neuromorphic behaviors. Next, the latest advances in the development of vertical transistor and shed light on bio-related neuromorphic applications are discussed. They are discussed in detail from the aspects of materials and potential applications. Finally, future research challenges in neuromorphic vertical transistor are briefly summarized, and their prospects are discussed. The construction of neuromorphic vertical transistor can not only resolve the computer architecture bottleneck, but also alleviate the Moore-s limit. Therefore, the implementation of neuromorphic vertical transistors is of great significance for emulating biological sensory synapses/neurons. In this review, devices for visual bionic applications will be introduced around three aspects: typical dimensions, typical materials, and potential applications.image & COPY; 2023 WILEY-VCH GmbH