Enhanced bandwidth of white light communication using nanomaterial phosphors. (14th September 2018)

• Record Type: Journal Article
• Authors: Xue, Dingke; Ruan, Cheng; Zhang, Yu; Chen, Haobin; Chen, Xiongbin; Wu, Changfeng; Zheng, Chuantao; Chen, Hongda; Yu, William W
• Is Part Of: Nanotechnology. Volume 29:Number 45(2018)
• Publication Date: 2018-09-14
• Subjects: nanomaterial -- visible light communication -- white light emitting diodes; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/aaddc0
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: The bandwidth of white light emitting diodes (WLEDs) is an important factor that affects most of the system performances in visible light communication (VLC). It is mainly limited by the down-conversion phosphors. We propose in this paper to employ nanomaterial phosphors with short fluorescence lifetime and high quantum yield in VLC. The white-emitting device of bandwidth-based lifetime was fabricated by using several kinds of nanophosphors with different fluorescence lifetimes. Moreover, we proposed two theoretical models to analyze the factors that affect bandwidth. Compared with the commercial YAG-based WLEDs, the bandwidth of nanophosphor-based WLEDs can be improved over three times and close to the blue excitation sources. Our study indicates that nanophosphors can become promising fluorescent materials in VLC, and provides a new direction for developing wide-bandwidth VLC systems.