Colloidal PbS Quantum Dots for Visible-to-Near-Infrared Optical Internet of Things
| Autor: | Omar Alkhazragi, Depeng Li, Haodong Tang, Tien Khee Ng, Meiwei Kong, Marat Lutfullin, Aigerim Tankimanova, Osman M. Bakr, Lutfan Sinatra, Kai Wang, Boon S. Ooi, Xiao Wei Sun, Chun Hong Kang, Shihao Ding, Bing Xu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Optical fiber
Materials science Optical Internet of Things Orthogonal frequency-division multiplexing Optical link quantum dots 02 engineering and technology lead sulphide 010402 general chemistry 01 natural sciences Multiplexing law.invention law Applied optics. Photonics Spontaneous emission Electrical and Electronic Engineering orthogonal frequency-division multiplexing business.industry QC350-467 Optics. Light 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics TA1501-1820 0104 chemical sciences Quantum dot Modulation Optoelectronics 0210 nano-technology business Data transmission |
| Zdroj: | IEEE Photonics Journal, Vol 13, Iss 2, Pp 1-11 (2021) |
| ISSN: | 1943-0647 |
| Popis: | The emergence of optical Internet of Things (optical-IoT) for sixth-generation (6G) networks 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 innovations 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 $\mu$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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|