Author(s): Wang, K (Wang, Kun); Liu, Y (Liu, Ye); Chen, R (Chen, Rong); Wu, CX (Wu, Chaoxing); Zhou, XT (Zhou, Xiongtu); Zhang, YA (Zhang, Yongai); Liu, ZQ (Liu, Zhiqiang); Guo, TL (Guo, Tailiang)

Source: IEEE ELECTRON DEVICE LETTERS Volume: 42 Issue: 7 Pages: 1033-1036 DOI: 10.1109/LED.2021.3077515 Published: JUL 2021

Abstract: 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.

Accession Number: WOS:000668843100020

ISSN: 0741-3106

eISSN: 1558-0563

Full Text: https://ieeexplore.ieee.org/document/9422816/