Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures
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 stru...
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| Format: | Article |
| Language: | English |
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Springer
2025-04-01
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| Series: | Discover Nano |
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| Online Access: | https://doi.org/10.1186/s11671-025-04219-5 |
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| author | 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 |
| author_facet | 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 |
| author_sort | Tzu-Yi Lee |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-044c24ec99994282bc3d4fcc45ddcc1a |
| institution | OA Journals |
| issn | 2731-9229 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Springer |
| record_format | Article |
| series | Discover Nano |
| spelling | doaj-art-044c24ec99994282bc3d4fcc45ddcc1a2025-08-20T01:54:19ZengSpringerDiscover Nano2731-92292025-04-0120111110.1186/s11671-025-04219-5Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structuresTzu-Yi Lee0Chien-Chi Huang1Fu-He Hsiao2Chin-Wei Sher3Gong-Ru Lin4Li-Yin Chen5Fang-Chung Chen6Chia-Feng Lin7Jr-Hau He8Kuo-Bin Hong9Yu-Heng Hong10Hao-Chung Kuo11Department of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung UniversityDepartment of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung UniversitySemiconductor Research Center, Hon Hai Research InstituteSemiconductor Research Center, Hon Hai Research InstituteDepartment of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics, National Taiwan UniversityDepartment of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung UniversityDepartment of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung UniversityDepartment of Materials Science and Engineering, National Chung Hsing UniversityDepartment of Materials Science and Engineering, City University of Hong KongSemiconductor Research Center, Hon Hai Research InstituteSemiconductor Research Center, Hon Hai Research InstituteDepartment of Photonics, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung UniversityAbstract 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.https://doi.org/10.1186/s11671-025-04219-5Micro resonant cavity light emitting diodeMicrolensDistributed bragg reflector |
| spellingShingle | 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 Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures Discover Nano Micro resonant cavity light emitting diode Microlens Distributed bragg reflector |
| title | Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures |
| title_full | Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures |
| title_fullStr | Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures |
| title_full_unstemmed | Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures |
| title_short | Optimization of dispersion angle in resonant cavity micro-light-emitting diode using multilayer DBR and microlens structures |
| title_sort | optimization of dispersion angle in resonant cavity micro light emitting diode using multilayer dbr and microlens structures |
| topic | Micro resonant cavity light emitting diode Microlens Distributed bragg reflector |
| url | https://doi.org/10.1186/s11671-025-04219-5 |
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