Dursun, Ibrahim; Shen, Chao; Parida, Manas R.; Pan, Jun; Sarmah, Smritakshi P.; Priante, Davide; AlYami, Noktan Mohammed; Liu, Jiakai; Saidaminov, Makhsud I.; Alias, Mohd Sharizal; Abdelhady, Ahmed L.; Ng, Tien Khee; Mohammed, Omar F.; Ooi, Boon S.; Bakr, Osman(ACS Photonics, American Chemical Society (ACS), 2016-06-08)[Article]
Visible light communication (VLC) is an emerging technology that uses light-emitting diodes (LEDs) or laser diodes for simultaneous illumination and data communication. This technology is envisioned to be a major part of the solution to the current bottlenecks in data and wireless communication. However, the conventional lighting phosphors that are typically integrated with LEDs have limited modulation bandwidth and thus cannot provide the bandwidth required to realize the potential of VLC. In this work, we present a promising light converter for VLC by designing solution-processed CsPbBr3 perovskite nanocrystals (NCs) with a conventional red phosphor. The fabricated CsPbBr3 NCs phosphor-based white light converter exhibits an unprecedented modulation bandwidth of 491 MHz, which is ~ 40 times greater than that of conventional phosphors, and the capability to transmit a high data rate of up to 2 Gbit/s. Moreover, this perovskite enhanced white light source combines ultrafast response characteristics with a high color rendering index of 89 and a low correlated color temperature of 3236 K, thereby enabling dual VLC and solid-state lighting functionalities.
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