Enhanced bandwidth of white light communication using nanomaterial phosphors

Nanotechnology
Dingke XueWilliam W Yu

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.

References

Apr 8, 2009·Angewandte Chemie·Henning A Höppe
Dec 24, 2009·Journal of the American Chemical Society·Jiangbo YuJason McNeill
Aug 6, 2010·Chemical Reviews·Johannes Pecher, Stefan Mecking
Mar 8, 2011·Angewandte Chemie·Changfeng WuDaniel T Chiu
Apr 27, 2012·Optics Express·Wen-Yi LinHsiao-Wen Wu
Jan 12, 2013·Angewandte Chemie·Changfeng Wu, Daniel T Chiu
Oct 21, 2014·ACS Applied Materials & Interfaces·Hang LinYuansheng Wang
Nov 5, 2014·Analytical Chemistry·Long YanWilliam W Yu
Jun 2, 2011·The Journal of Physical Chemistry Letters·Chun Che Lin, Ru-Shi Liu
Aug 31, 2016·Topics in Current Chemistry·Liang SuAndrey L Rogach
Feb 14, 2017·ACS Applied Materials & Interfaces·Changyin JiWilliam W Yu

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