Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures

IF 5.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nanoscale Research Letters Pub Date : 2025-04-04 DOI:10.1186/s11671-025-04219-5

Tzu-Yi Lee, Chien-Chi Huang, Fu-He Hsiao, Chin-Wei Sher, Gong-Ru Lin, Li-Yin Chen, Fang-Chung Chen, Chia-Feng Lin, Jr-Hau He, Kuo-Bin Hong, Yu-Heng Hong, Hao-Chung Kuo

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引用次数: 0

Abstract

In this paper, the fabrication and the corresponding performance characteristics of resonant cavity micro-light-emitting diodes (RC-μ-LEDs) are examined, with particular emphasis placed on reducing the light emission angle to enhance their application efficiency. A stepped quantum well structure and a multilayer aperture distributed Bragg reflector (DBR) are used to reduce the light emission angle, and two different approaches are investigated: one is by adding a multilayer DBR structure, and the other is by incorporating a microlens (ML) structure. The experimental results show that both adjusting the DBR cycles and adding microlenses can effectively reduce the dispersion angle of light emission, and thus improving the directionality of light, wavelength stability, and the overall device performance. Such highly directional light sources offer great solutions for optical communications, micro-LEDs, and augmented reality (AR) applications.

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来源期刊

Nanoscale Research Letters 工程技术-材料科学：综合

CiteScore

11.30

自引率

0.00%

发文量

110

审稿时长

48 days

期刊介绍： Nanoscale Research Letters (NRL) provides an interdisciplinary forum for communication of scientific and technological advances in the creation and use of objects at the nanometer scale. NRL is the first nanotechnology journal from a major publisher to be published with Open Access.