Zhang Ziyu, Cai Tianjun, Li Zengxin, Wu Binmin, Zheng Zhi, You Chunyu, Jiang Guobang, Ma Mingze, Xu Zengyi, Shen Chao, Chen Xiang-Zhong, Song Enming, Cui Jizhai, Huang Gaoshan, Mei Yongfeng
Department of Materials Science & State Key Laboratory of Molecular Engineering of Polymer, Fudan University, Shanghai, 200438, China.
Key Laboratory for Information Science of Electromagnetic Waves Department of Communication Science and Engineering, Fudan University, Shanghai, 200438, China.
Adv Mater. 2025 Jan;37(1):e2413771. doi: 10.1002/adma.202413771. Epub 2024 Nov 21.
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.
对于可见光通信的广泛应用而言，先进光接收器的实现至关重要。然而，多功能和高性能可见光接收器的集成仍受限于器件结构和系统复杂性。在此，提出一种基于石墨烯读出的硅基微管光电探测器作为全向Mbps级可见光通信的接收器。石墨烯 - 半导体材料系统的集成同时确保了对入射光的有效吸收和光生载流子的快速读出，该器件展现出75 ns的超快响应速度和6803 A/W的高响应度。此外，微管光电探测器实现了全向光捕获和增强的偏振光探测。作为可见光通信系统的接收端，微管光电探测器实现了高达778 Mbps的数据速率、140°的视野以及偏振光的加密可见光通信，为物联网的未来发展和信息安全提供了新的可能性。
