Watts-level ultraviolet-CLED integrated light sources for efficient surface and air sterilization

作     者：Wei Luo Tai Li Yongde Li Houjin Wang Ye Yuan Shangfeng Liu Weiyun Wang Qi Wang Junjie Kang Xinqiang Wang Wei Luo;Tai Li;Yongde Li;Houjin Wang;Ye Yuan;Shangfeng Liu;Weiyun Wang;Qi Wang;Junjie Kang;Xinqiang Wang

作者机构：Songshan Lake Materials LaboratoryDongguan 523808China State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsNano-Optoelectronics Frontier Center of Ministry of EducationPeking UniversityBeijing 100871China Dongguan Institute of Opto-ElectronicsPeking UniversityDongguan 523808China 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2022年第43卷第7期

页      面：61-67页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：supported by the Guangdong Basic and Application Basic Research Foundation of Guangdong Province (Nos. 2021A1515111149  2021B1515120022  2020B 010174003) 

主　　题：ultraviolet-C LED integrated light source surface sterilization air sterilization 

摘      要：With the epidemic of the coronavirus disease(COVID-19) infection, AlGaN-based ultraviolet-C light emitting diodes(UVC-LEDs) have attracted widespread attention for their sterilization application. However, the sterilization characters of high power integrated light sources(ILSs) haven’t been widely investigated before utilizing in public sanitary security. In this work,by integrating up to 195 UVC-LED chips, high power UVC-LED ILSs with a light output power(LOP) of 1.88 W were demonstrated. The UVC-LED ILSs were verified to have efficient and rapid sterilization capability, which have achieved more than99.9% inactivation rate of several common pathogenic microorganisms within 1 s. In addition, the corresponding air sterilization module based on them was also demonstrated to kill more than 97% of Staphylococcus albus in the air of 20 m3 confined room within 30 min. This work demonstrates excellent sterilization ability of UVC-LED ILSs with high LOP, revealing great potential of UVC-LEDs in sterilization applications in the future.