Conjugated Polymer–Wrapped High-Purity Semiconducting Carbon Nanotubes for Synaptic Transistors
발표자
최수오 (충북대학교)
연구책임자
임보규 (충북대학교)
초록
내용
Carbon nanotubes (CNTs) are promising materials for neuromorphic devices due to their high mobility, stability, and scalability for various application. Among them, semiconducting CNTs (sc-CNTs) are suitable for analogue conductance modulation, although forming uniform networks remains challenging. Here, we demonstrate synaptic transistors based on high-purity sc-CNT networks. The sc-CNTs enable stable charge trapping and controlled conductance modulation, exhibiting p-type switching with an on/off ratio of ~ 7 × 106 and non-volatile memory behavior. Synaptic functions, including short- and long-term memory as well as long-term potentiation and depression, are emulated with stable operation over 10,000 pulse cycles. Furthermore, low nonlinearity and asymmetry lead to a handwritten image recognition accuracy of 90.26% in artificial neural network simulations. These results indicate that high-purity sc-CNT networks are a reliable platform for high-precision neuromorphic circuitry.