TIPS-pentacene organic field-effect transistor for optoelectronic neuromorphic simulation

作者：Tianyang Feng, Qingxuan Li, Xuemeng Hu, Yafen Yang, Hang Xu, Hao Zhu, Qingqing Sun, Wen-Jun Liu, David Wei Zhang, Lin Chen · 发表于：Japanese Journal of Applied Physics · 年份：2024 · DOI：10.35848/1347-4065/ad3009 · 被引用次数：7 · 研究领域：Advanced Memory and Neural Computing、Organic Electronics and Photovoltaics、Quantum-Dot Cellular Automata

Abstract Biological learning and memory of visual information are carried out through the regulation of synaptic weight by visual neuron synapses. Replicating the cognitive processes and light-induced adaptability of the human brain holds immense significance for the advancement of artificial intelligence. Here, we propose an organic photoelectric synaptic transistor based on 6,13-bis(triisopropylsilylethynyl) pentacene. The device showcases a memory window greater than 20 V and current on/off ratio of 10 6 . Synaptic behavior transition is exhibited from short-term plasticity to long-term plasticity under photoelectric pulse modulation, including paired-pulse facilitation, spike time dependent plasticity, spike number dependent plasticity and optical enhancement/electrical inhibition. In addition, we simulate the learning and adaptation process of the synaptic device after long-term light stimulation, and recognize visual information by perceiving light pulses in different time domains.