Enhancing Modulation Bandwidth of Parallel Micro-LED Arrays for Visible Light Communication
In this letter, parallel micro-LED arrays with numbers of 1×1, 1×2, 2×2 and 2×3 were fabricated and the p-electrode patterns of arrays were optimized. The results show that both the light output power (LOP) and modulation bandwidth increase with the parallel array numbers. Moreover, optimizing the p-electrode pattern can effectively facilitate current spreading, mitigate thermal crowding, and enhance the LOP. Under combined with the LOP and thermal effect, the 2×2 ring-electrode parallel array achieved the highest modulation bandwidth of 172 MHz and maximum LOP of 5.70 mW, which were improved by 17.28% and 13.98%, respectively. This work provides a reference to design micro-LED chip for high bandwidth.
Authors
- Wenan Guo (ORCID: https://orcid.org/0000-0003-4632-4636)
- Tingwei Lu (ORCID: https://orcid.org/0000-0003-4445-4648)
- Shibiao Liu (ORCID: https://orcid.org/0000-0002-4945-8093)
- Meixiu Wan (ORCID: https://orcid.org/0000-0002-0865-6376)
- Hao‐Chung Kuo (ORCID: https://orcid.org/0000-0002-9373-4649)
- Yijun Lü (ORCID: https://orcid.org/0000-0002-1247-6597)
- Tingzhu Wu (ORCID: https://orcid.org/0000-0001-9453-6823)
- Zhong Chen (ORCID: https://orcid.org/0000-0002-1473-2224)
- Guolong Chen (ORCID: https://orcid.org/0000-0003-0183-5803)
- Zhong Liu (ORCID: https://orcid.org/0000-0003-4096-3170)
Institutions
- Xiamen University (CN)
Publication Details
- Journal
- IEEE Electron Device Letters
- Published
- 2025-05-01
- DOI
- https://doi.org/10.1109/led.2025.3556406
- Citations
- 2
- Primary Topic
- Optical Wireless Communication Technologies
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities