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dc.contributor.authorTankimanova, Aigerim
dc.contributor.authorKang, Chun Hong
dc.contributor.authorAlkhazragi, Omar
dc.contributor.authorTang, Haodong
dc.contributor.authorKong, Meiwei
dc.contributor.authorSinatra, Lutfan
dc.contributor.authorLutfullin, Marat
dc.contributor.authorLi, Depeng
dc.contributor.authorDing, Shihao
dc.contributor.authorXu, Bing
dc.contributor.authorBakr, Osman
dc.contributor.authorWang, Kai
dc.contributor.authorSun, Xiao Wei
dc.contributor.authorNg, Tien Khee
dc.contributor.authorOoi, Boon S.
dc.identifier.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
dc.description.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.
dc.description.sponsorshipThis 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).
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.rightsUnder a Creative Commons License.
dc.subjectOptical Internet of Things
dc.subjectquantum dots
dc.subjectlead sulphide
dc.subjectorthogonal frequency-division multiplexing
dc.titleColloidal PbS quantum dots for visible-to-near-infrared optical-internet-of-things
dc.contributor.departmentComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
dc.contributor.departmentElectrical and Computer Engineering
dc.contributor.departmentElectrical and Computer Engineering Program
dc.contributor.departmentFunctional Nanomaterials Lab (FuNL)
dc.contributor.departmentInvestment Fund
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentKing Abdullah University of Science and Technology, 127355 Thuwal, Makkah, Saudi Arabia,
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhotonics Laboratory
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionSouthern University of Science and Technology, 255310 Shenzhen, Guangdong, China,
dc.contributor.institutionDepartment of Electrical & Electronic Engineering, South University of Science and Technology of China, Shenzhen, Guangdong, China, 518055
dc.contributor.institutionDepartment of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China, 518055
kaust.personTankimanova, Aigerim
kaust.personKang, Chun Hong
kaust.personAlkhazragi, Omar
kaust.personKong, Meiwei
kaust.personSinatra, Lutfan
kaust.personLutfullin, Marat
kaust.personBakr, Osman M.
kaust.personNg, Tien Khee
kaust.personOoi, Boon S.
kaust.grant.numberKACST TIC R2-FP-008
kaust.acknowledged.supportUnitKAUST Solar Center

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