Wei Huanhuan, Xu Zhipeng, Ni Yao, Yang Lu, Sun Lin, Gong Jiangdong, Zhang Song, Qu Shangda, Xu Wentao
Institute of Photoelectronic Thin Film Devices and Technology of Nankai University, Key Laboratory of Optoelectronic Thin Film Devices and Technology of Tianjin, Engineering Research Center of Thin Film Optoelectronics Technology, College of Electronic Information and Optical Engineering of Nankai University, National Institute for Advanced Materials, Nankai University, Ministry of Education, Tianjin 300350, People's Republic of China.
Institutes of Physical Science and Information Technology, School of Materials Science and Engineering, Key Laboratory of Structure and Functional Regulation of Hybrid Materials, Anhui University, Ministry of Education, Hefei 230601, People's Republic of China.
Nano Lett. 2023 Sep 27;23(18):8743-8752. doi: 10.1021/acs.nanolett.3c02836. Epub 2023 Sep 12.
A mixed-dimensional dual-channel synaptic transistor composed of inorganic nanoparticles and organic nanowires was fabricated to expand the photoelectric gain range. The device can actualize the sensitization features of the nociceptor and shows improved responsiveness to visible light. Under electrical pulses with different polarities, the apparatus exhibits reconfigurable asymmetric bidirectional plasticity. Moreover, the devices demonstrate good operational tolerance and mechanical stability, retaining more than 60% of their maximum responsiveness after 100 consecutive/bidirectional and 1000 flex/flat operations. The improved photoelectric response of the device endows a high image recognition accuracy of greater than 80%. Asymmetric bidirectional plasticity is used as punishment/reward in a psychological experiment to emulate the improvement of learning motivation and enables real-time forward and backward deflection (+7 and -25°) of artificial muscle. The mixed-dimensional optoelectronic artificial synapses with switchable behavior and electron/hole transport type have important prospects for neuromorphic processing and artificial somatosensory nerves.
一种由无机纳米颗粒和有机纳米线组成的混合维度双通道突触晶体管被制造出来，以扩大光电增益范围。该器件能够实现伤害感受器的敏化特性，并对可见光表现出更高的响应性。在不同极性的电脉冲下，该装置呈现出可重构的不对称双向可塑性。此外，这些器件表现出良好的操作耐受性和机械稳定性，在连续100次/双向和1000次弯曲/展平操作后，仍保持其最大响应性的60%以上。该器件改进的光电响应赋予了大于80%的高图像识别准确率。不对称双向可塑性在一项心理实验中被用作惩罚/奖励，以模拟学习动机的改善，并使人工肌肉能够实时向前和向后偏转（+7和-25°）。具有可切换行为和电子/空穴传输类型的混合维度光电人工突触在神经形态处理和人工体感神经方面具有重要前景。
