用于低能耗人工视觉系统的具有互补光调制和低功耗的双极突触有机/无机异质结晶体管
Bipolar synaptic organic/inorganic heterojunction transistor with complementary light modulation and low power consumption for energy-efficient artificial vision systems
刘常飞 1高昌松 2黄伟龙 1连敏锐 1许晨晖 2陈惠鹏 2郭太良 2胡文平3
作者信息
- 1. Institute of Optoelectronic Display,National & Local United Engineering Lab of Flat Panel Display Technology,Fuzhou University,Fuzhou 350002,China;Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350100,China;Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City,Fuzhou 350207,China
- 2. Institute of Optoelectronic Display,National & Local United Engineering Lab of Flat Panel Display Technology,Fuzhou University,Fuzhou 350002,China;Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350100,China
- 3. Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City,Fuzhou 350207,China;Tianjin Key Laboratory of Molecular Optoelectronic Sciences,Department of Chemistry,School of Science,Tianjin University & Collaborative Innovation,Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China
- 折叠
摘要
光电突触晶体管将光传感和突触功能集成到单个器件中,在视觉信息采集、识别、记忆和处理的神经形态计算具有显著的优势.然而,现有光电突触的权重更新主要是基于光刺激和电刺激分别调节突触的兴奋和抑制.这种方式严重限制了器件的处理速度和应用场景.在这项工作中,我们提出了双极突触有机/无机异质结晶体管(BSOIHT),可以有效地模拟光刺激下的双向(兴奋/抑制)突触行为.此外,通过优化电极接触位置以及电极材料,晶体管的载流子注入得到了显著改善,使得突触事件功耗降至2.4 fJ.此外,采用BSOIHT构建的神经形态视觉系统,有效地促进了图像预处理,将识别准确率从44.93％大幅提高到87.01％.这为构建低能耗的人工视觉系统提供了新的途径.
Abstract
Photoelectric synaptic transistors integrate op-tical sensing and synaptic functions into a single device,which has significant advantages in neuromorphic computing for visual information,recognition,memory,and processing.However,the weight updating of existing photoelectric sy-napses is predominantly based on separate utilization of light and electrical stimuli to regulate synaptic excitation and in-hibition.This approach significantly restricts the processing speed and application scenarios of devices.In this work,we propose bipolar synaptic organic/inorganic heterojunction transistor(BSOIHT)that can effectively simulate bidirec-tional(excitatory/inhibitory)synaptic behavior under light stimulation.Furthermore,by changing the position of elec-trode contacts and the metals of source and drain electrodes,carrier injection of the transistor is significantly improved with reduced synaptic event power consumption down to 2.4 fJ.Moreover,the BSOIHTs are adopted to build the neu-romorphic vision system,which effectively facilitates image preprocessing and substantially enhances the recognition ac-curacy from 44.93％to 87.01％.This paper provides new ave-nues for the construction of energy-efficient artificial vision systems.
关键词
photoelectric synaptic transistor/artificial vision system/low energy consumption/bipolar heterojunction tran-sistorKey words
photoelectric synaptic transistor/artificial vision system/low energy consumption/bipolar heterojunction tran-sistor引用本文复制引用
基金项目
National Key Research and Development Program of China(2022YFB3603802)
National Natural Science Foundation of China(62374033)
Fujian Science &Technology Innovation Laboratory for Optoelectronic Information of China(2021ZZ129)
出版年
2024
NETL
NSTL
万方数据