Light-Pulse Splitting From Nano-Light-Emitting Diodes Operating in Noncarrier Injection Mode
Light-Pulse Splitting From Nano-Light-Emitting Diodes Operating in Noncarrier Injection Mode
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DOI：
10.1109/led.2021.3077515
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发表时间：
2021-07-01
影响因子：
4.9
通讯作者：
Guo, Tailiang
中科院分区：
文献类型：
--
作者：
Wang, Kun;Liu, Ye;Guo, Tailiang
非载流子注入（NCI）模式是一种新兴的纳米级发光二极管（LED）驱动模式。在这里，我们证明了来自NCI-LED的单个光脉冲可以分裂成具有小脉冲宽度的多个脉冲，这是使用传统驱动技术无法获得的。光脉冲分裂是通过使用组合信号来实现的，该组合信号是基本信号和具有小幅度和高频率的信号的叠加。给出了关于传导电流和电流脉冲分裂的理论方程，从理论上解释了光脉冲分裂现象。然后，光脉冲分裂的实验证明与电容器-LED-电容器的结构，用于模拟发光在NCI模式的物理。最后，我们演示了纳米棒GaN发光二极管的光脉冲分裂，并讨论了与电子多频振荡相关的工作机制。这一工作可以加深对NCI模式的理解，并为先进的光脉冲技术提供了一种潜在的途径。
Noncarrier injection (NCI) mode is an emerging driving mode for nanoscale light-emitting diodes (LEDs). Here, we demonstrate that a single light pulse from NCI-LEDs can be split into multiple pulses with small pulse widths that cannot be obtained by using traditional driving technology. Light-pulse splitting is achieved by using a combined signal that is a superposition of a basic signal and a signal with small amplitude and high frequency. Theoretical equations regarding the conduction current and current-pulse splitting are provided to explain light-pulse splitting theoretically. Then, light-pulse splitting is experimentally proven with a capacitor-LED-capacitor construction that is used to simulate the luminescence in NCI mode physically. Finally, we demonstrate light-pulse splitting from nanorod GaN-LEDs and discuss the working mechanisms related to electron multiple-frequency oscillation. This work can deepen the understanding of the NCI mode and provides a potential approach for advanced light-pulse-based technology.