Effects of the P-Electrode Area Ratio on the Performance of Micro Light-Emitting Diodes for Display and Communication

IF 4.1 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Electron Device Letters Pub Date : 2025-02-07 DOI:10.1109/LED.2025.3539655

Shi-Biao Liu;Ming-He Wan;Wen-An Guo;You-Cai Deng;Guo-Long Chen;Mai-Jia Lin;Hao-Chung Kuo;Yi-Jun Lu;You-Qin Lin;Zhong Chen;Ting-Zhu Wu

引用次数: 0

Abstract

In this letter, green micro-LEDs with a chip size of

$27 \; \mu $

m and different P-electrode area ratios (20%, 30%, 40%, and 50%) were fabricated and characterized to determine the optimal P-electrode area ratio for display and communication. The results showed that increasing the P-electrode area ratio improved the uniformity in the current distribution of the micro-LED. However, it can also cause significant metal light-blocking. The optimal P-electrode area ratio of the micro-LED for displays was 30%, yielding optimal external quantum efficiency (EQE) and light output power (LOP). The optimal P-electrode area ratio of the micro-LED for communication was 50%, resulting in a marked improvement in the normalized frequency response and -3 dB bandwidth. It is crucial to select the appropriate P-electrode area ratio for the micro-LED depending on the applications.

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来源期刊

IEEE Electron Device Letters 工程技术-工程：电子与电气

CiteScore

8.20

自引率

10.20%

发文量

551

审稿时长

1.4 months

期刊介绍： IEEE Electron Device Letters publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors.