Toward self-powered and reliable visible light communication using amorphous silicon thin-film solar cells
Kang, Chun Hong
Ng, Tien Khee
Ooi, Boon S.
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Photonics Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 21534, Saudi Arabia
Permanent link to this recordhttp://hdl.handle.net/10754/659997
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AbstractEnhancing robustness and energy efficiency is critical in visible light communication (VLC) to support large-scale data traffic and connectivity of smart devices in the era of fifth-generation networks. To this end, we demonstrate that amorphous silicon (a-Si) thin-film solar cells with a high light absorption coefficient are particularly useful for simultaneous robust signal detection and efficient energy harvesting under the condition of weak light in this study. Moreover, a first-generation prototype called AquaE-lite is developed that consists of an a-Si thin-film solar panel and receiver circuits, which can detect weak light as low as 1 µW/cm2. Using AquaE-lite and a white-light laser, orthogonal frequency-division multiplexing signals with data rates of 1 Mb/s and 908.2 kb/s are achieved over a 20-m long-distance air channel and 2.4-m turbid outdoor pool water, respectively, under the condition of strong background light. The reliable VLC system based on energy-efficient a-Si thin-film solar cells opens a new pathway for future satellite-air-ground-ocean optical wireless communication to realize connectivity among millions of Internet of Things devices.
CitationKong, M., Lin, J., Kang, C. H., Shen, C., Guo, Y., Sun, X., … Ooi, B. S. (2019). Toward self-powered and reliable visible light communication using amorphous silicon thin-film solar cells. Optics Express, 27(24), 34542. doi:10.1364/oe.27.034542
SponsorsKing Abdullah University of Science and Technology (KAUST) (baseline funding, BAS/1/1614-01-01, KAUST funding KCR/1/2081-01-01, and GEN/1/6607-01-01); King Abdulaziz City for Science and Technology (KACST) Grant KACST TIC R2-FP-008.
PublisherThe Optical Society