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学者姓名：吴朝兴
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Abstract ：
A smart grid is a new generation power system, which realizes the interconnection of information in intelligent, efficient, and stable operation modes. Thus, high -voltage monitoring is an important part of ensuring efficient power transmission in a smart grid. However, traditional voltage monitors that rely on wired connections have limitations in meeting the adaptability requirement for smart grids. In this work, inspired by the double-TENG structure, we propose a self -powered high -voltage monitoring device with strong anti -interference, namely, the Maxwell's displacement current -driven lighting emitting diode (MDC-LED), and proved that the MDC-LED with four electrodes can reorganize the electric field near the powerline, leading to an approximately uniform electric field. Therefore, the light output from the MDC-LED is highly sensitive to the electrical signal of the powerline and has a strong anti -device vibration. Because of the MDC-LED's high sensitivity to alternating electric fields, it can detect the electric pollution in the powerline, as well as the powerline's vibration frequency and amplitude. We believe the MDC-LED can provide a novel technical approach for the development of detection systems for use in smart grids.
Keyword ：
Lighting emitting diode Lighting emitting diode Maxwell 's displacement current Maxwell 's displacement current Self -powered Self -powered Smart grid Smart grid Triboelectric nanogenerator Triboelectric nanogenerator
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| GB/T 7714 | Li, Wenhao , Wang, Kun , Qiu, Jiawen et al. Self-powered powerline monitor with strong anti-interference based on Maxwell's displacement current-driven LED [J]. | NANO ENERGY , 2024 , 123 . |
| MLA | Li, Wenhao et al. "Self-powered powerline monitor with strong anti-interference based on Maxwell's displacement current-driven LED" . | NANO ENERGY 123 (2024) . |
| APA | Li, Wenhao , Wang, Kun , Qiu, Jiawen , Li, Junlong , Zhang, Shuqian , Chen, Rong et al. Self-powered powerline monitor with strong anti-interference based on Maxwell's displacement current-driven LED . | NANO ENERGY , 2024 , 123 . |
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Due to intensive integration and seamless continuous operation, the overheated artificially intelligent (AI) integrated circuit systems will affect the operation system's effectiveness, stability, and lifetime. Therefore, we proposed a temperature adaptability memristor in the silver nanowires (AgNWs)/nanocomposite/indium-tin-oxide structure in this study. The nanocomposite is the nitrogen-doped graphene/Ti3CNTx MXene blend in the polyvinylidene fluoride matrix. The device has been prepared by using heterostructure nanocomposites with a low-cost and facile all-solution method. The device mimicked a series of trained behaviors inherent with biological synapses, including spike-timing-dependent plasticity, paired-pulse facilitation, short-term potentiation/depression, long-term potentiation/depression, and excitatory postsynaptic currents. In addition, the device demonstrated significant self-adaptability to temperature due to the involvement of the homogeneously distributed conductive heterostructure and the filament formation ascribed to the low melting point of AgNWs. The operation of the device shows temperature adaptability owing to the excellent thermal conductivity and small thermal expansion coefficient of nitrogen-doped graphene/Ti3CNTx. This finding provides viable strategies to address the critical challenges of deploying AI in different environments, paving the way for the development of more efficient and resilient neuromorphic computing systems.
Keyword ：
heterostructure heterostructure memristor memristor nitrogen-doped graphene nitrogen-doped graphene temperature-adaptive temperature-adaptive Ti3CNT x MXene Ti3CNT x MXene
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| GB/T 7714 | Kou, Lijie , Sadri, Rad , Momodu, Damilola et al. N-Doped Graphene/MXene Nanocomposite as a Temperature-Adaptive Neuromorphic Memristor [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (4) : 3631-3644 . |
| MLA | Kou, Lijie et al. "N-Doped Graphene/MXene Nanocomposite as a Temperature-Adaptive Neuromorphic Memristor" . | ACS APPLIED NANO MATERIALS 7 . 4 (2024) : 3631-3644 . |
| APA | Kou, Lijie , Sadri, Rad , Momodu, Damilola , Roberts, Edward P. L. , Mohammad Haniff, Muhammad Aniq Shazni , Wu, Chaoxing et al. N-Doped Graphene/MXene Nanocomposite as a Temperature-Adaptive Neuromorphic Memristor . | ACS APPLIED NANO MATERIALS , 2024 , 7 (4) , 3631-3644 . |
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Due to the simple structure, single-contact light-emitting diode (SC-LED) holds promise for applications in ultrahigh resolution micro-displays. However, the required alternating current (ac) operation poses challenges for grayscale modulation in image display applications. Therefore, it is of great significance to develop a potential grayscale control technology for the ac-driven SC-LEDs. In this work, the optical and electrical characteristics of the SC-LEDs are investigated, and an anomalous pulsewidth modulation (A-PWM) technology is proposed. In the A-PWM mode, the brightness decreases with the increasing pulsewidth, which is totally different from conventional pulsewidth modulation. The carrier transport model and the circuit model are established to clarify the A-PWM mechanism. Furthermore, the brightness division is carried out on the basis of the A-PWM, and the human eye brightness perception model is established. Nonlinear correction is applied to align the brightness change with the characteristics of human eye perception. This work proposes a brightness modulation method suitable for SC-LEDs, which is expected to be applied to ac-driven nano-pixel light-emitting displays.
Keyword ：
Alternating current (ac)-driven Alternating current (ac)-driven anomalous-pulsewidth modulation anomalous-pulsewidth modulation gallium nitride light-emitting diode (GaN-LED) gallium nitride light-emitting diode (GaN-LED) grayscale control grayscale control human perceptual characteristics human perceptual characteristics
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| GB/T 7714 | Xiao, Tianyu , Wang, Kun , Li, Wenhao et al. Anomalous-Pulsewidth Modulation of Single-Contact Light-Emitting Diode for Grayscale Control [J]. | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (1) : 651-655 . |
| MLA | Xiao, Tianyu et al. "Anomalous-Pulsewidth Modulation of Single-Contact Light-Emitting Diode for Grayscale Control" . | IEEE TRANSACTIONS ON ELECTRON DEVICES 71 . 1 (2024) : 651-655 . |
| APA | Xiao, Tianyu , Wang, Kun , Li, Wenhao , Zhang, Yongai , Zhou, Xiongtu , Lin, Shanling et al. Anomalous-Pulsewidth Modulation of Single-Contact Light-Emitting Diode for Grayscale Control . | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (1) , 651-655 . |
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The human brain possesses a remarkable ability to memorize information with the assistance of a specific external environment. Therefore, mimicking the human brain's environment-enhanced learning abilities in artificial electronic devices is essential but remains a considerable challenge. Here, a network of Ag nanowires with a moisture-enhanced learning ability, which can mimic long-term potentiation (LTP) synaptic plasticity at an ultralow operating voltage as low as 0.01 V, is presented. To realize a moisture-enhanced learning ability and to adjust the aggregations of Ag ions, we introduced a thin polyvinylpyrrolidone (PVP) coating layer with moisture-sensitive properties to the surfaces of the Ag nanowires of Ag ions. That Ag nanowire network was shown to exhibit, in response to the humidity of its operating environment, different learning speeds during the LTP process. In high-humidity environments, the synaptic plasticity was significantly strengthened with a higher learning speed compared with that in relatively low-humidity environments. Based on experimental and simulation results, we attribute this enhancement to the higher electric mobility of the Ag ions in the water-absorbed PVP layer. Finally, we demonstrated by simulation that the moisture-enhanced synaptic plasticity enabled the device to adjust connection weights and delivery modes based on various input patterns. The recognition rate of a handwritten data set reached 94.5% with fewer epochs in a high-humidity environment. This work shows the feasibility of building our electronic device to achieve artificial adaptive learning abilities.
Keyword ：
Ag nanofilament Ag nanofilament Ag nanowire network Ag nanowire network electricmobility electricmobility long-term potentiation long-term potentiation moisture-enhanced learning ability moisture-enhanced learning ability
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| GB/T 7714 | Qiu, Jiawen , Li, Junlong , Li, Wenhao et al. Silver Nanowire Networks with Moisture-Enhanced Learning Ability [J]. | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (8) : 10361-10371 . |
| MLA | Qiu, Jiawen et al. "Silver Nanowire Networks with Moisture-Enhanced Learning Ability" . | ACS APPLIED MATERIALS & INTERFACES 16 . 8 (2024) : 10361-10371 . |
| APA | Qiu, Jiawen , Li, Junlong , Li, Wenhao , Wang, Kun , Xiao, Tianyu , Su, Hao et al. Silver Nanowire Networks with Moisture-Enhanced Learning Ability . | ACS APPLIED MATERIALS & INTERFACES , 2024 , 16 (8) , 10361-10371 . |
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Optimizing the driving panel of display to decrease the number of driving lines is of importance to high-resolution displays. Especially, it is important to address the challenge of the increasing number of row and column electrode lines. In this work, an approach for realizing the one line-to-three LEDs driving method employing the noncarrier injection (NCI) operational mode has been demonstrated, and the NCI-LEDs using discrete components are constructed. The operating characteristics and principles of the NCI-LEDs are studied. It is demonstrated that electroluminescent (EL) output states of three parallel NCI-LEDs vary with driving frequency, that is, the NCI-LEDs has frequency-selective properties. Therefore, the separate control of three LEDs under the control of a single signal line is realized, and the subpixel circuit selection of three RGB colors is realized. This driving method can effectively mitigate the complexity of the electrode wiring required by the row-column scanning, which is expected to provide important guidance for the development of high-resolution displays.
Keyword ：
Alternating current (AC) driven Alternating current (AC) driven frequency selection frequency selection light-emitting diodes (LEDs) light-emitting diodes (LEDs) noncarrier injection (NCI) noncarrier injection (NCI) RC circuit RC circuit
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| GB/T 7714 | Zhang, Shuqian , Li, Wenhao , Wang, Kun et al. Noncarrier Injection Mode for Realizing One Line-to-Three LEDs Driving Method [J]. | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (4) : 2486-2490 . |
| MLA | Zhang, Shuqian et al. "Noncarrier Injection Mode for Realizing One Line-to-Three LEDs Driving Method" . | IEEE TRANSACTIONS ON ELECTRON DEVICES 71 . 4 (2024) : 2486-2490 . |
| APA | Zhang, Shuqian , Li, Wenhao , Wang, Kun , Guo, Yanming , Gong, Zheng , Zhang, Zhipeng et al. Noncarrier Injection Mode for Realizing One Line-to-Three LEDs Driving Method . | IEEE TRANSACTIONS ON ELECTRON DEVICES , 2024 , 71 (4) , 2486-2490 . |
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In order to evaluate the influence of defects on the performance of Micro‐LED devices, this paper adopts a finite element simulation method based on semiconductor physics. Firstly, a simulation model of Micro‐LED devices is established, including key components such as electrodes, materials, and structures. Then, defect parameters are set to simulate the optical properties of Micro‐LED devices. Finally, by comparing the simulation results with or without introducing deep level defects, the influence law of these defects on the optical output and electrical characteristics of Micro‐LED devices was revealed.
Keyword ：
Defects Defects Finite element simulation Finite element simulation Gallium nitride Gallium nitride Micro-LED Micro-LED Photoelectric properties Photoelectric properties
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| GB/T 7714 | Jinyu Ye , Xiongtu Zhou , Yongai Zhang et al. P‐11.14: The Impact of Defects on the Performance of Micro‐LED Devices: A Simulation Study [J]. | SID Symposium Digest of Technical Papers , 2024 , 55 : 1332-1334 . |
| MLA | Jinyu Ye et al. "P‐11.14: The Impact of Defects on the Performance of Micro‐LED Devices: A Simulation Study" . | SID Symposium Digest of Technical Papers 55 (2024) : 1332-1334 . |
| APA | Jinyu Ye , Xiongtu Zhou , Yongai Zhang , Chaoxing Wu , Tailiang Guo , Qun Yan . P‐11.14: The Impact of Defects on the Performance of Micro‐LED Devices: A Simulation Study . | SID Symposium Digest of Technical Papers , 2024 , 55 , 1332-1334 . |
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Quantum dot (QD) light-emitting devices operating in non-carrier-injection electroluminescence (NCI-QDEL) mode have attracted attention due to their extremely simple structure and excellent stability. However, the working mechanisms of the QD-based NCI-QDEL still require further improvement, especially regarding the transfer process of charges between QDs. Noting that there are plenty of salt compounds and organic ligands between QDs during the solution synthesis, which must have an influence on the device performance by impacting the charge transfer process. Thus, it is necessary to reveal effect of the QD surrounding states on the NCI-QDEL performance. In this work, effect of the purification process on the surrounding states of QDs is investigated, and the charge transfer process is elucidated according to the NCI-QDEL performance. It is found that a moderate energy barrier between QDs is helpful to improve NCI-QDEL. We propose a working mode of the QD-based NCI-QDEL, in which the salt compounds and organic ligands between QDs are equivalent to QD-QD energy barriers that can adjust the charge transfer process and increase the electron-hole overlap probability. We believe that this work can provide guidance for the design and fabrication of QDs suitable for NCI devices.
Keyword ：
Energy barrier Energy barrier Light-emitting diode Light-emitting diode Non-carrier injection Non-carrier injection Quantum dot Quantum dot
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| GB/T 7714 | Xie, Biao , Li, Wenhao , Li, Junlong et al. Increasing energy barrier between quantum dots for enhancing non-carrier-injection electroluminescence [J]. | JOURNAL OF LUMINESCENCE , 2024 , 269 . |
| MLA | Xie, Biao et al. "Increasing energy barrier between quantum dots for enhancing non-carrier-injection electroluminescence" . | JOURNAL OF LUMINESCENCE 269 (2024) . |
| APA | Xie, Biao , Li, Wenhao , Li, Junlong , Su, Hao , Qiu, Jiawen , Shi, Baoran et al. Increasing energy barrier between quantum dots for enhancing non-carrier-injection electroluminescence . | JOURNAL OF LUMINESCENCE , 2024 , 269 . |
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Abstract ：
Micro-LED拥有出色的亮度、高发光效率、低能耗、高反应速度、超高解析度与色彩饱和度等优势，且具备自发光和感测能力，是一项十分理想的显示技术。传统的直流灰度调控方法不再适用于驱动单端载流子注入结构的交流型LED,本文根据单端注入型LED器件在不同频率、幅度、占空比以及交流驱动模式下的光电特性，提出一种基于人眼视觉特性的相对占空比混合式灰度调制方案。结果表明，正负方波驱动模式下的器件在相同电压和频率下表现出更强的发光亮度，并且器件随着驱动频率的增加，发光亮度逐渐提升。最后，结合人眼视觉特性，验证了发光器件在不同相对占空比、幅度、频率的混合式调制方法下实现了由2个灰度到8个灰度等级的提升，为未来新型发光器件灰度调制提供新思路。
Keyword ：
LED LED 交流电 交流电 光电性能 光电性能 单端载流子注入 单端载流子注入 灰度调制 灰度调制
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| GB/T 7714 | 林珊玲 , 卢杰 , 吴朝兴 et al. 单端注入型LED的光电特性与灰度调制技术研究 [J]. | 电子元件与材料 , 2024 , 43 (05) : 521-527 . |
| MLA | 林珊玲 et al. "单端注入型LED的光电特性与灰度调制技术研究" . | 电子元件与材料 43 . 05 (2024) : 521-527 . |
| APA | 林珊玲 , 卢杰 , 吴朝兴 , 林志贤 , 郭太良 . 单端注入型LED的光电特性与灰度调制技术研究 . | 电子元件与材料 , 2024 , 43 (05) , 521-527 . |
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Power network monitoring devices play a key role in maintaining the health and safety of power networks, so it is important to realize the sustained power supply to the monitoring devices. In this paper, a non-contact self-powered device with electrode-capacitor-electrode (ECE) structure is proposed, which can capture and store the energy of the AC electric field around the high-voltage line, so as to store the electric energy in the capacitor. It is expected to realize the continuous independent power supply to the power grid monitoring equipment. It is demonstrated that when the transmission line voltage is 7kV, the output voltage of the ECE pole plate is up to more than 600V, and 48 LEDs can be lit. For a capacitor with a capacity of 50mF, it only takes about 30 minutes to charge 15V from 5V, and can continuously output a 5 V and 50mA power for about 16 seconds. In addition, it is further found that the output voltage of the rectifier bridge increases as the parallel resistance increases, which makes it possible to effectively control the charging time by controlling the size of the resistance. The proposed self-powered device with electrode-capacitor-electrode structure provides a new energy power supply strategy for grid monitoring devices, which is expected to play an important role in enhancing the stability and reliability of power systems. © 2024 SPIE.
Keyword ：
AC field coupling AC field coupling electrode-capacitor-electrode electrode-capacitor-electrode grid monitoring devices grid monitoring devices Self-powered Self-powered
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| GB/T 7714 | Wang, P. , Chen, X. , Lin, W. et al. Energy extraction from high-voltage line based on AC field coupling [未知]. |
| MLA | Wang, P. et al. "Energy extraction from high-voltage line based on AC field coupling" [未知]. |
| APA | Wang, P. , Chen, X. , Lin, W. , Yuan, M. , Zhang, L. , Wu, C. . Energy extraction from high-voltage line based on AC field coupling [未知]. |
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纳米LED有望应用于超高分辨率微型显示器件,减小纳米LED的出光角度对于降低相邻像素的光串扰具有重要意义.为了获得较小出光角度的氮化镓基纳米LED,本文采用有限元方法,研究了纳米LED形状、量子阱中氮化镓厚度,以及包裹电介质层对其远场辐射强度和出光角度的影响.仿真结果显示,柱形纳米LED结构可以实现约57°的垂直出光角度;通过调整量子阱中氮化镓的厚度为3 nm,在不影响远场强度的情况下可以进一步将垂直出光角度降低至52°.此外,在纳米LED外围包裹折射率为1.5、宽度为200～300 nm的电介质层,可以有效抑制纳米柱侧面出光,使远场强度提升40%.本研究为氮化镓基纳米LED的设计和优化提供了仿真实验支持,有望推动基于纳米LED的超高分辨率显示技术的发展.
Keyword ：
光学仿真 光学仿真 出光角度优化 出光角度优化 纳米LED 纳米LED 远场辐射 远场辐射
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| GB/T 7714 | 张志鹏 , 苏昊 , 李文豪 et al. 纳米LED远场辐射强度与出光角度的优化仿真 [J]. | 光学学报 , 2024 , 44 (22) : 170-178 . |
| MLA | 张志鹏 et al. "纳米LED远场辐射强度与出光角度的优化仿真" . | 光学学报 44 . 22 (2024) : 170-178 . |
| APA | 张志鹏 , 苏昊 , 李文豪 , 张树钱 , 郭焱民 , 龚正 et al. 纳米LED远场辐射强度与出光角度的优化仿真 . | 光学学报 , 2024 , 44 (22) , 170-178 . |
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