| Autor: |
Fanlu Zhang, Zhicheng Su, Zhe Li, Yi Zhu, Nikita Gagrani, Ziyuan Li, Mark Lockrey, Li Li, Igor Aharonovich, Yuerui Lu, Hark Hoe Tan, Chennupati Jagadish, Lan Fu |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Opto-Electronic Science, Vol 2, Iss 5, Pp 1-11 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2097-0382 |
| DOI: |
10.29026/oes.2023.230003 |
| Popis: |
Miniaturized light sources at telecommunication wavelengths are essential components for on-chip optical communication systems. Here, we report the growth and fabrication of highly uniform p-i-n core-shell InGaAs/InP single quantum well (QW) nanowire array light emitting diodes (LEDs) with multi-wavelength and high-speed operations. Two-dimensional cathodoluminescence mapping reveals that axial and radial QWs in the nanowire structure contribute to strong emission at the wavelength of ~1.35 and ~1.55 μm, respectively, ideal for low-loss optical communications. As a result of simultaneous contributions from both axial and radial QWs, broadband electroluminescence emission with a linewidth of 286 nm is achieved with a peak power of ~17 μW. A large spectral blueshift is observed with the increase of applied bias, which is ascribed to the band-filling effect based on device simulation, and enables voltage tunable multi-wavelength operation at the telecommunication wavelength range. Multi-wavelength operation is also achieved by fabricating nanowire array LEDs with different pitch sizes on the same substrate, leading to QW formation with different emission wavelengths. Furthermore, high-speed GHz-level modulation and small pixel size LED are demonstrated, showing the promise for ultrafast operation and ultracompact integration. The voltage and pitch size controlled multi-wavelength high-speed nanowire array LED presents a compact and efficient scheme for developing high-performance nanoscale light sources for future optical communication applications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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