High Bandwidth GaN-Based Micro-LEDs at Temperatures up to 400 ∘C

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-07-29 DOI:10.1109/LPT.2024.3434601

Daniel J. Rogers;Haotian Xue;Fred A. Kish;Fu-Chen Hsiao;Bardia Pezeshki;Alexander Tselikov;Jonathan J. Wierer

引用次数: 0

Abstract

Gallium-nitride-based, blue micro-light-emitting diodes (micro-LEDs) with electro-optical −3 dB modulation bandwidths of 3.73 GHz at 11 kA/cm2 at room temperature and 4.00 GHz at 9 kA/cm2 at 200°C are reported. These bandwidths are the highest reported thus far for micro-LEDs. The micro-LEDs operate at high temperatures, up to 400°C, and bandwidths improve with increased temperatures. The lifetimes and recombination rates of the micro-LEDs active layer are determined by measuring and analyzing the impedance, modulation response, and radiative efficiency. This analysis shows increasing bandwidths with increasing current density and temperature resulting from dominant non-radiative lifetimes.

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温度高达 400°C 时的高带宽氮化镓基微型 LED

据报道，基于氮化镓的蓝色微型发光二极管（micro-LED）在室温下 11 kA/cm2 时的电光 -3 dB 调制带宽为 3.73 GHz，在 200°C 下 9 kA/cm2 时的带宽为 4.00 GHz。这些带宽是迄今所报道的微型 LED 的最高带宽。微型 LED 可在高达 400°C 的高温下工作，带宽随着温度的升高而提高。通过测量和分析阻抗、调制响应和辐射效率，确定了微型 LED 有源层的寿命和重组率。分析结果表明，随着电流密度和温度的增加，带宽也会增加，这是因为非辐射寿命占主导地位。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.