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学者姓名：陈耿旭
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图像在传输和显示过程中，由于噪声、特征衰减等原因会造成不同程度的图像质量下降问题，导致信息的错误传递，因此通过图像预处理来改善图像质量及提取图像特征十分必要。除了需要图像采集，还需要人脑对图像进行信息处理。神经形态显示器件作为可以模拟人脑中的神经元突触，具有传输快、抗干扰能力强等诸多优点，被认为是神经形态领域中有价值的组成部分。提出二维材料Ti_3C_2T_x MXene纳米片与钙钛矿量子点共混（CsPbBr_3/MXene）形成的异质结结构增强了光电流的产生，并结合有机半导体材料PDVT-10优异的载流子迁移率制备的有机薄膜突触晶体管，成功模拟了生物突触的兴奋性突触后电流（Excitatory Post-Synaptic Current,EPSC）、双脉冲易化（Paired-Pulse Facilitation,PPF）等基本功能。在相同的光脉冲刺激下，相较于纯CsPbBr_3突触晶体管，CsPbBr_3/MXene突触晶体管的单脉冲EPSC与多脉冲EPSC峰值分别达到148%与157.6%的巨幅提升，实现了在相同时间内从短期可塑性（Short-Term Plasticity,STP）到长期可塑性（Long-Term Plasticity,LTP）的快速转化。
Keyword ：
加速学习 加速学习 图像预处理 图像预处理 有机薄膜晶体管 有机薄膜晶体管
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| GB/T 7714 | 代岩 , 陈耿旭 . 基于可加速学习有机薄膜晶体管的视觉图像预处理的研究 [J]. | 电视技术 , 2024 , 48 (05) : 72-78,85 . |
| MLA | 代岩 等. "基于可加速学习有机薄膜晶体管的视觉图像预处理的研究" . | 电视技术 48 . 05 (2024) : 72-78,85 . |
| APA | 代岩 , 陈耿旭 . 基于可加速学习有机薄膜晶体管的视觉图像预处理的研究 . | 电视技术 , 2024 , 48 (05) , 72-78,85 . |
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Artificial photonic synapses offer an efficient solution for overcoming the von Neumann bottleneck in data storage and processing, providing advantages over electrical synapses by eliminating the bandwidth-connection-density tradeoff and exhibiting low power consumption. Perovskite quantum dots (QDs) have garnered significant attention in artificial photonic synapses due to their facile synthesis and favorable optoelectronic properties. However, challenges such as limited carrier mobility and nonlinearity impede their performance in neuromorphic applications. In this study, CsPbBr3-attached MXene nanostructures (CsPbBr3-MXene), in-situ growth of CsPbBr3 QDs on MXene nanosheets, were proposed as the light-absorbing layer of a synaptic phototransistor. The heterostructure formed by CsPbBr3 and MXene enhances photocurrent generation. Comparative analyses between CsPbBr3-MXene synapse transistor and that containing only CsPbBr3 revealed a 24.6% higher excitatory postsynaptic current (EPSC) in the CsPbBr3-MXene one under identical light pulse stimulation. Following calculations and comparisons, the linearity exhibited significant improvement, decreasing from 4.586 to 1.099. Furthermore, the recognition accuracy in handwritten digit classification notably increased, rising from 86.13% to 92.05%. Moreover, the F1 score in edge detection had improvement, advancing from 0.8165 to 0.9065, approaching closer to 1. These improvements have demonstrated substantial assistance in the field of neural computing.
Keyword ：
CsPbBr3-attached MXene CsPbBr3-attached MXene image preprocessing image preprocessing in-situ growth in-situ growth pattern recognition accuracy pattern recognition accuracy synaptic phototransistor synaptic phototransistor
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| GB/T 7714 | Dai, Yan , Chen, Gengxu , Huang, Weilong et al. A high-linearity synaptic phototransistor based on CsPbBr3-attached MXene nanostructures for image classification and edge detection tasks [J]. | SCIENCE CHINA-MATERIALS , 2024 , 67 (7) : 2246-2255 . |
| MLA | Dai, Yan et al. "A high-linearity synaptic phototransistor based on CsPbBr3-attached MXene nanostructures for image classification and edge detection tasks" . | SCIENCE CHINA-MATERIALS 67 . 7 (2024) : 2246-2255 . |
| APA | Dai, Yan , Chen, Gengxu , Huang, Weilong , Xu, Chenhui , Liu, Changfei , Huang, Ziyu et al. A high-linearity synaptic phototransistor based on CsPbBr3-attached MXene nanostructures for image classification and edge detection tasks . | SCIENCE CHINA-MATERIALS , 2024 , 67 (7) , 2246-2255 . |
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Multi-sensory neuromorphic devices (MND) have broad potential in overcoming the structural bottleneck of von Neumann in the era of big data. However, the current multisensory artificial neuromorphic system is mainly based on unitary nonvolatile memory or volatile synaptic devices without intrinsic thermal sensitivity, which limits the range of biological multisensory perception and the flexibility and computational efficiency of the neural morphological computing system. Here, a temperature-dependent memory/synaptic hybrid artificial neuromorphic device based on floating gate phototransistors (FGT) is fabricated. The CsPbBr3/TiO2 core-shell nanocrystals (NCs) prepared by in-situ pre-protection low-temperature solvothermal method were used as the photosensitive layer. The device exhibits remarkable multi-level visual memory with a large memory window of 59.6 V at room temperature. Surprisingly, when the temperature varies from 20 to 120 & DEG;C back and forth, the device can switch between nonvolatile memory and volatile synaptic device with reconfigurable and reversible behaviors, which contributes to the efficient visual/thermal fusion perception. This work expands the sensory range of multisensory devices and promotes the development of memory and neuromorphic devices based on organic field-effect transistors (OFET).
Keyword ：
floating gate phototransistors floating gate phototransistors multisensory neuromorphic devices multisensory neuromorphic devices perovskite nanocrystals perovskite nanocrystals temperature temperature
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| GB/T 7714 | Chen, Gengxu , Yu, Xipeng , Gao, Changsong et al. Temperature-controlled multisensory neuromorphic devices for artificial visual dynamic capture enhancement [J]. | NANO RESEARCH , 2023 , 16 (5) : 7661-7670 . |
| MLA | Chen, Gengxu et al. "Temperature-controlled multisensory neuromorphic devices for artificial visual dynamic capture enhancement" . | NANO RESEARCH 16 . 5 (2023) : 7661-7670 . |
| APA | Chen, Gengxu , Yu, Xipeng , Gao, Changsong , Dai, Yan , Hao, Yanxue , Yu, Rengjian et al. Temperature-controlled multisensory neuromorphic devices for artificial visual dynamic capture enhancement . | NANO RESEARCH , 2023 , 16 (5) , 7661-7670 . |
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Artificial tactile sensing system could realize the perception of different types of tactile information. Nowadays, most tactile sensors mainly convert the exter-nal stimulation signals into different material conductiv-ity value, and processed by complex external circuits to detect the human physiological signals. In this work, the artificial synaptic device was connected with triboelectric nanogenerator(TENG) to fabricate a tactile sensing system in a simple way. This system could detect the external pressure stimulations and accurately recognize small fre-quency touch signals of 1-2.5 Hz. In addition, the complex biological behavior was also simulated, which enlightened significance for the future bionic tactile systems and the field of human-computer interaction.
Keyword ：
Biology Biology Dogs Dogs Electrodes Electrodes Ions Ions Sensors Sensors Synapses Synapses Synaptic transistor Synaptic transistor touch detection touch detection Transistors Transistors triboelectric nanogenerator triboelectric nanogenerator
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| GB/T 7714 | Liu, Di , Lian, Qiming , Liu, Yaqian et al. Artificial Tactile Sensing System Based on Triboelectric Nanogenerator and Synaptic Transistor [J]. | IEEE ELECTRON DEVICE LETTERS , 2023 , 44 (4) : 634-637 . |
| MLA | Liu, Di et al. "Artificial Tactile Sensing System Based on Triboelectric Nanogenerator and Synaptic Transistor" . | IEEE ELECTRON DEVICE LETTERS 44 . 4 (2023) : 634-637 . |
| APA | Liu, Di , Lian, Qiming , Liu, Yaqian , Zhang, Xianghong , Shan, Liuting , Chen, Gengxu et al. Artificial Tactile Sensing System Based on Triboelectric Nanogenerator and Synaptic Transistor . | IEEE ELECTRON DEVICE LETTERS , 2023 , 44 (4) , 634-637 . |
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介绍了一种利用飞秒激光技术制备的石墨烯异质结薄膜晶体管（GHTFT）。基于还原氧化石墨烯制备石墨烯的原理，该晶体管利用飞秒激光直接在硅基底上制备石墨烯，最终获得了3.05×102的电流开关比。相较于以前报道的石墨烯晶体管，该值提升了102。同时还研究了不同还原程度的氧化石墨烯对GHTFT电流开关比的影响，结果表明氧化石墨烯的还原程度越高，GHTFT的电流开关比越大，这说明飞秒激光能够有效调节GHTFT的电学性能。除此之外，鉴于当前石墨烯制备的困难，提出的方法能够有效避免转移过程和化学过程，同时飞秒激光的高效率提高了石墨烯晶体管的制备效率。
Keyword ：
石墨烯异质结薄膜晶体管 石墨烯异质结薄膜晶体管 还原氧化石墨烯 还原氧化石墨烯 飞秒激光 飞秒激光
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| GB/T 7714 | 郝彦雪 , 陈耿旭 , 郭太良 . 飞秒激光调控的石墨烯异质结薄膜晶体管 [J]. | 光电子技术 , 2023 , 43 (04) : 293-297 . |
| MLA | 郝彦雪 et al. "飞秒激光调控的石墨烯异质结薄膜晶体管" . | 光电子技术 43 . 04 (2023) : 293-297 . |
| APA | 郝彦雪 , 陈耿旭 , 郭太良 . 飞秒激光调控的石墨烯异质结薄膜晶体管 . | 光电子技术 , 2023 , 43 (04) , 293-297 . |
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3D optical storage, spatially expanding storage capacity, is regarded as an effective and economical way to break the diffraction limit of the conventional 2D optical storage. In this study, a new kind of 3D optical storage medium, i.e., vanadium ions (V5+) doped sodium borate glass, is developed, showing intriguing spatially-selected photochromism (PC) upon laser driven excitation. Significantly, a brand-new PC mechanism of V5+-aggregation regulated by localized optical basicity (OB) of glass is proposed and demonstrated. The developed PC glass is responsive to a low-price desktop-level mini-laser to encode optical information, yields unique twofold decoding modes in bright- and dark-fields, and shows good data erasibility. 3D volumetric optical storage with a memory density of approximate to 480 Mbit cm-3 is realized with the aid of an advanced femtosecond laser micro-machining system. The findings suggest a novel design approach to fabricate 3D PC glass in terms of manipulating the scale of optical basicity in glass, hopefully stimulating the development of new multi-dimensional PC optical storage media. A new strategy to design photochromic glass as 3D optical storage medium is proposed, following a principle of regulating local optical basicity of glass during the interaction with a laser.image
Keyword ：
glass glass laser laser optical basicity optical basicity optical storage optical storage photochromism photochromism
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| GB/T 7714 | Li, Xuefeng , Wu, Yaman , Lin, Hang et al. Photochromic 3D Optical Storage: Laser-Induced Regulation of Localized Optical Basicity of Glass [J]. | LASER & PHOTONICS REVIEWS , 2023 , 18 (1) . |
| MLA | Li, Xuefeng et al. "Photochromic 3D Optical Storage: Laser-Induced Regulation of Localized Optical Basicity of Glass" . | LASER & PHOTONICS REVIEWS 18 . 1 (2023) . |
| APA | Li, Xuefeng , Wu, Yaman , Lin, Hang , Chen, Gengxu , Hao, Yanxue , Wang, Pengfei et al. Photochromic 3D Optical Storage: Laser-Induced Regulation of Localized Optical Basicity of Glass . | LASER & PHOTONICS REVIEWS , 2023 , 18 (1) . |
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Multifunctional neuromorphic devices, integrating the acquisition, computation, and processing of information, have exceptional advantages to simulate biological behaviors and become one of the foundations of future neuromorphic computing. However, the realization of sensor-memory-calculation in a single device remains a great challenge. Herein, memory-synaptic hybrid optoelectronic transistors were developed with hydrolyzed silica-coated lead-free double perovskite Cs2AgBiBr6 and organic semiconductors, which exhibited sensor-memory-calculation behavior. This work offers a novel strategy for constructing multifunctional neuromorphic devices, which will further inspire the development of floating-gate device in future neuromorphic computing.
Keyword ：
Multifunctional Multifunctional organic thin-film transistors organic thin-film transistors photo-memory photo-memory synaptic plasticity modulation synaptic plasticity modulation
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| GB/T 7714 | Chen, Gengxu , Peng, Gang , Yu, Xipeng et al. Multifunctional Memory-Synaptic Hybrid Optoelectronic Transistors for Neuromorphic Computing [J]. | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2022 , 69 (7) : 3997-4001 . |
| MLA | Chen, Gengxu et al. "Multifunctional Memory-Synaptic Hybrid Optoelectronic Transistors for Neuromorphic Computing" . | IEEE TRANSACTIONS ON ELECTRON DEVICES 69 . 7 (2022) : 3997-4001 . |
| APA | Chen, Gengxu , Peng, Gang , Yu, Xipeng , Yu, Weijie , Hao, Yanxue , Dai, Yan et al. Multifunctional Memory-Synaptic Hybrid Optoelectronic Transistors for Neuromorphic Computing . | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2022 , 69 (7) , 3997-4001 . |
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Arrays of flexible organic thin-film transistors (OTFTs) are the prerequisite to realize commercialization of flexible electronics. However, photolithography and print techniques are uneasy to combine high performance, high integration density, and compatibility with flexible substrates to fabricate OTFT arrays. In this work, OTFT arrays with high resolution, flexibility and process convenience are patterned by femtosecond laser (fs-laser). 1 cm(2) of area can accommodate up to 6250 transistors with sharp edges and short channel lengths by selective processing. Furthermore, micron-scale resolution flexible image sensor with integration potential were verified. Hence, these results will impel the development of flexible wearable electronic devices in the future.
Keyword ：
ablation ablation Bending Bending Femtosecond laser Femtosecond laser image sensor image sensor Laser ablation Laser ablation Optimized production technology Optimized production technology Organic thin film transistors Organic thin film transistors organic thin-film transistors (OTFTs) organic thin-film transistors (OTFTs) Sensor arrays Sensor arrays Substrates Substrates Thermal stability Thermal stability
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| GB/T 7714 | Chen, Gengxu , Yu, Weijie , Hao, Yanxue et al. Micron-Scale Resolution Image Sensor Based on Flexible Organic Thin Film Transistor Arrays via Femtosecond Laser Processing [J]. | IEEE ELECTRON DEVICE LETTERS , 2022 , 43 (2) : 248-251 . |
| MLA | Chen, Gengxu et al. "Micron-Scale Resolution Image Sensor Based on Flexible Organic Thin Film Transistor Arrays via Femtosecond Laser Processing" . | IEEE ELECTRON DEVICE LETTERS 43 . 2 (2022) : 248-251 . |
| APA | Chen, Gengxu , Yu, Weijie , Hao, Yanxue , Peng, Gang , Yu, Xipeng , Dai, Yan et al. Micron-Scale Resolution Image Sensor Based on Flexible Organic Thin Film Transistor Arrays via Femtosecond Laser Processing . | IEEE ELECTRON DEVICE LETTERS , 2022 , 43 (2) , 248-251 . |
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利用四甲氧基硅烷（TMOS）易水解形成低聚二氧化硅（OS）的特性，结合双钙钛矿Cs2AgBiBr6与有机半导体材料IDTBT优异的光电特性，通过调整低聚二氧化硅的厚度来实现对有机薄膜晶体管（OTFT）突触性能的调控。模拟了突触的兴奋性后突触电流（EPSC）、双脉冲易化（PPF）等基本功能，并进一步实现突触晶体管加速学习功能。研究有望为搭建低能耗的人工神经网络提供一种有效的方案。
Keyword ：
加速学习 加速学习 有机薄膜晶体管 有机薄膜晶体管 突触 突触
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| GB/T 7714 | 彭港 , 陈耿旭 . 一种具有可加速学习功能的有机薄膜晶体管 [J]. | 光电子技术 , 2022 , 42 (03) : 207-212 . |
| MLA | 彭港 et al. "一种具有可加速学习功能的有机薄膜晶体管" . | 光电子技术 42 . 03 (2022) : 207-212 . |
| APA | 彭港 , 陈耿旭 . 一种具有可加速学习功能的有机薄膜晶体管 . | 光电子技术 , 2022 , 42 (03) , 207-212 . |
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Sensory neurons integrate multiple sensory inputs into a synthetical perception to monitor complex environments, which significantly impact on how we perceive the world. However, a true implementation of such an electronic device to mimic multiple sensory modalities, especially the coordinating behaviors of multisensory integration, has rarely been reported thus far. Herein, an artificial multisensory integration nervous system with haptic and iconic perception behaviors is developed by integrating flexible triboelectric nanogenerator (TENG) with organic photosynaptic transistor, where lead-free perovskite (Cs2AgBiBr6) quantum dots (QDs) are firstly presented. Meanwhile, Inverse effectiveness effect and Temporal congruency, which are the primary principles of multisensory integration in biological perceptual system, are firstly precisely mimicked in our system. Moreover, the pattern recognition results show that multisensory integration exhibited obviously higher accuracy than single sense, which is consistent with biological system. Furthermore, 3 x 3 pixel array of artificial photosynaptic circuits actuated with TENG is designed and demonstrated for the recognition of various objects in extreme environments, which further verifies the superiority of the multisensory integration with improved image contrast, accuracy of subsequent pattern recognition, and environment-adaptable perception behaviors. This work provides new insight into developing artificial multisensory integration nerve in neuromorphic perceptions and neuromorphic computing, which is of great significance in future human-machine interaction, sophisticated robotic prostheses and neurorobotic system.
Keyword ：
Lead-free perovskite quantum dots Lead-free perovskite quantum dots Multisensory integration Multisensory integration Organic transistor Organic transistor Synaptic transistors Synaptic transistors Triboelectric nanogenerator Triboelectric nanogenerator
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| GB/T 7714 | Wu, Xiaomin , Li, Enlong , Liu, Yaqian et al. Artificial multisensory integration nervous system with haptic and iconic perception behaviors [J]. | NANO ENERGY , 2021 , 85 . |
| MLA | Wu, Xiaomin et al. "Artificial multisensory integration nervous system with haptic and iconic perception behaviors" . | NANO ENERGY 85 (2021) . |
| APA | Wu, Xiaomin , Li, Enlong , Liu, Yaqian , Lin, Weikun , Yu, Rengjian , Chen, Gengxu et al. Artificial multisensory integration nervous system with haptic and iconic perception behaviors . | NANO ENERGY , 2021 , 85 . |
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