AI Article Synopsis
- - The text discusses the need for advanced light receivers to improve visible light communication but highlights challenges with current device structures and complexities.
- - A new graphene-readout silicon-based microtube photodetector is proposed, offering quick response times (75 ns) and high sensitivity (responsivity of 6803 A/W), making it suitable for high-speed communication.
- - This photodetector enables omnidirectional light-trapping and high data rates (up to 778 Mbps), with a wide field of view (140°) and capabilities for encrypted communication, which could enhance future developments in IoT and data security.
Article Abstract
The implementation of an advanced light receiver is imperative for the widespread application of visible light communication. However, the integration of multifunctional and high-performance visible light receivers is still limited by device structure and system complexity. Herein, a graphene-readout silicon-based microtube photodetector is proposed as the receiver for omnidirectional Mbps-level visible light communication. The integration of graphene-semiconductor material systems simultaneously ensures the effective absorption of incident light and rapid readout of photogenerated carriers, and the device exhibits an ultrafast response speed of 75 ns and high responsivity of 6803 A W. In addition, the microtube photodetector realizes the omnidirectional light-trapping and enhanced polarization photodetection. As the receiving end of the visible light communication system, the microtube photodetector achieves a data rate of up to 778 Mbps, a field of view of 140°, and the encrypted visible light communication of polarized light, providing a new possibility for the future development of the internet of things and information security.
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| http://dx.doi.org/10.1002/adma.202413771 | DOI Listing |
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