Colloidal PbS quantum dots for visible-to-near-infrared optical-internet-of-things
Kang, Chun Hong
Sun, Xiao Wei
Ng, Tien Khee
Ooi, Boon S.
KAUST DepartmentKing Abdullah University of Science and Technology, 127355 Thuwal, Makkah, Saudi Arabia,
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Material Science and Engineering Program
KAUST Catalysis Center (KCC)
Permanent link to this recordhttp://hdl.handle.net/10754/668140
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AbstractThe emergence of optical-internet-of-things (Optical-IoT) for sixth-generation (6G) network has been envisaged to relieve the bandwidth congestion in the conventional radio frequency (RF) channel, and to support the ever-increasing number of smart devices. Among the plethora of device-innovation deemed essential for fortifying the development, herein we report on the visible-to-near-infrared color-conversion luminescent-dyes based on lead sulphide quantum dots (PbS QDs), so as to achieve an eye-safe high-speed optical link. The solution-processed PbS QDs exhibited strong absorption in the visible range, radiative recombination lifetime of 6.4 s, as well as high photoluminescence quantum yield of up to 88%. Our proof-of-principle demonstration based on an orthogonal frequency-division multiplexing (OFDM) modulation scheme established an infrared data transmission of 0.27 Mbit/s, readily supporting an indoor optical-IoT system, and shed light on the possibility for PbS-integrated transceivers in supporting remote access control of multiple nodes. We further envisaged that our investigations could find applications in future development of solution-processable PbS-integrated luminescent fibers, concentrators, and waveguides for high-speed optical receivers.
CitationTankimanova, A., Kang, C. H., Alkhazragi, O., Tang, H., Kong, M., Sinatra, L., … Ooi, B. S. (2021). Colloidal PbS quantum dots for visible-to-near-infrared optical-internet-of-things. IEEE Photonics Journal, 1–1. doi:10.1109/jphot.2021.3066521
SponsorsThis work was supported by funding from King Abdullah University of Science and Technology (KAUST) (BAS/1/1614-01- 01, KCR/1/2081-01-01, GEN/1/6607-01-01, OSR-CRG2017-3417), Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting (No. 2017KSYS007), Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting (No. ZDSYS201707281632549), Shenzhen Innovation Project (No. JCYJ20180305180629908) and Guangdong Youth Innovative Talents Project (No. 2018KQNCX228). The authors acknowledge the technical support from Semin Shikin, KAUST Solar Center for the optical characterization and KAUST Workshops Core Lab for the experimental setup. A.T. acknowledges Prof. Franco Zappa for his supervision and guidance. T.K.N. and B.S.O. acknowledge support from King Abdulaziz City for Science and Technology for the establishment of KACST-Technology-Innovation-Center on Solid State Lighting at KAUST (Grant no. KACST TIC R2-FP-008).