To relax the SCS in DUV-LEDs grown on HTA AlN/sapphire templates, Li et al.
Opto-Electronic Advances, Volume. 6, Issue 9, 230154(2023)
Recent developments in deep-ultraviolet sterilization of human respiratory RNA viruses
Deep-ultraviolet (DUV) sterilization technology using DUV-LEDs has attracted considerable attention owing to its portability, eco-friendliness, high potency, and broad-spectrum sterilization. This study compiles the developments of recent DUV sterilization research. Recent works have investigated DUV sterilization from the perspective of device improvement and principle investigation: one employed a novel epitaxial structure to optimize the performance and fabrication cost of DUV-LEDs and realized potent virus disinfection effects for various respiratory RNA viruses, and another work explained the disinfection phenomenon of SARS-CoV-2 and its variants (Delta and Omicron) in a cryogenic environment. These studies have contributed significantly to the development of DUV sterilization.
To relax the SCS in DUV-LEDs grown on HTA AlN/sapphire templates, Li et al.
These studies contribute to the development of portable, long-lasting, and broad-spectrum DUV-LED sterilization applications for disinfecting human respiratory RNA viruses, fill the research gaps regarding the differences in SARS-CoV-2 and its variants (Delta and Omicron), and clarify the influences of the cryogenic environment on DUV virucidal efficacy. Future work could research new types of DUV light sources, such as high-density GaN/AlN quantum dots or directional high-efficiency nanowire LEDs, and investigate the principle of surface roughness or nanoparticle size for DUV sterilization
Figure 1.(
DUV sterilization technology has been widely studied for the inactivation of human respiratory RNA viruses. However, many obstacles remain in the development of DUV sterilization with DUV-LEDs, which can be divided into three groups. First, fabricating DUV-LEDs on high-temperature-annealed (HTA) AlN/sapphire templates introduces strong compressive stress (SCS) and deteriorates their external quantum efficiency (EQE), whereas fabricating DUV-LEDs using AlN single-crystal substrate is too expensive for industrial application; thus, the luminous efficiency and fabrication cost of high-power DUV-LED light sources require further optimization
Figure 2.(
To clarify the influence of SARS-CoV-2 and its variants on DUV virucidal efficacy, the effect of DUV disinfection on the Omicron variant was analyzed by Kang et al.
Investigations on the influence of temperature on DUV disinfection are essential for DUV applications in cold conditions. Junyong Kang and his colleagues proposed a negative-U large-relaxation model to demonstrate the DUV disinfection process
Deep-ultraviolet (DUV) photonics is an effective sterilization technology that damages the genomes of human respiratory RNA viruses
[1] K Jiang, SM Liang, XJ Sun, JW Ben, L Qu et al. Rapid inactivation of human respiratory RNA viruses by deep ultraviolet irradiation from light-emitting diodes on a high-temperature-annealed AlN/sapphire template. Opto-Electron Adv, 230004(2023).
[2] PO Nyangaresi, Y Qin, GL Chen, BP Zhang, YH Lu et al. Comparison of the performance of pulsed and continuous UVC-LED irradiation in the inactivation of bacteria. Water Res, 218-227(2019).
[3] SF Liu, Y Yuan, LJ Huang, J Zhang, T Wang et al. Drive high power UVC-LED wafer into low-cost 4-inch era: Effect of strain modulation. Adv Funct Mater, 2112111(2022).
[4] HPT Nguyen. Graphene-driving novel strain relaxation towards AlN film and DUV photoelectronic devices. Light Sci Appl, 164(2022).
[5] SSA Karim, QA Karim. Omicron SARS-CoV-2 variant: a new chapter in the COVID-19 pandemic. Lancet, 2126-2128(2021).
[6] WY Kang, J Zheng, JX Huang, LN Jiang, QN Wang et al. Deep-ultraviolet photonics for the disinfection of SARS-CoV-2 and its variants (Delta and Omicron) in the cryogenic environment. Opto-Electron Adv, 220201(2023).
[7] LW Chen, MH Hong. Functional nonlinear optical nanoparticles synthesized by laser ablation. Opto-Electron Sci, 210007(2022).
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Tingzhu Wu, Shouqiang Lai, Zhong Chen, Hao-Chung Kuo. Recent developments in deep-ultraviolet sterilization of human respiratory RNA viruses[J]. Opto-Electronic Advances, 2023, 6(9): 230154
Category: Research Articles
Received: Aug. 26, 2023
Accepted: Aug. 28, 2023
Published Online: Nov. 15, 2023
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