Academic Journal
275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication
| العنوان: | 275 nm Deep Ultraviolet AlGaN-Based Micro-LED Arrays for Ultraviolet Communication |
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| المؤلفون: | Liang Guo, Yanan Guo, Jiankun Yang, Jianchang Yan, Jianguo Liu, Junxi Wang, Tongbo Wei |
| المصدر: | IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-5 (2022) |
| بيانات النشر: | IEEE, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Applied optics. Photonics LCC:Optics. Light |
| مصطلحات موضوعية: | Micro-LED arrays, ultraviolet communication, modulation bandwidth, size dependence, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467 |
| الوصف: | In this work, we fabricated and characterized 4 × 4 parallel flip-chip AlGaN-based micro-LED arrays with varied mesa diameters of 120 µm, 100 µm, 80 µm, and 60 µm. The reported micro-LED arrays have a maximum bandwidth of 380 MHz and a peak wavelength of ∼275 nm. It is found that the electrical and optical characteristics of AlGaN-based micro-LED arrays show strong size dependence for ultraviolet communication (UVC). The differential resistance increases from 28.8 Ω to 112 Ω, the external quantum efficiency (EQE) is increased by ∼30%, and the bandwidth doubles as the diameter of individual micro-LED decreases from 120 µm to 60 µm. Our research proves that tailoring the mesa size of parallel flip-chip AlGaN-based micro-LED arrays can further enhance its bandwidth and promote its application in UVC. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1943-0655 |
| Relation: | https://ieeexplore.ieee.org/document/9623490/; https://doaj.org/toc/1943-0655 |
| DOI: | 10.1109/JPHOT.2021.3129648 |
| URL الوصول: | https://doaj.org/article/9d5736dbb7584d0b81f555f01d26c28a |
| رقم الانضمام: | edsdoj.9d5736dbb7584d0b81f555f01d26c28a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19430655 |
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| DOI: | 10.1109/JPHOT.2021.3129648 |