Abstract: Deep UV LED package is a hotspot of growing concern for research scholars, it is through the LED semiconductor light-emitting devices emit UVC band ultraviolet (typical wavelength 260 ~ 280nm), is a new type of healthy artificial light source, compared with the traditional UV light source mercury lamps, the deep UV LED has a wavelength of accurate and controllable, green, and so on many advantages. Due to the high-energy deep UV radiation capability, it has a strong bactericidal and inactivation effect on bacteria, viruses and other microorganisms. In recent years, with the continuous progress of deep packaging technology, the optical efficiency and reliability of deep UV LEDs have been significantly improved. This paper summarizes the key technologies of deep-ultraviolet packaging, the performance of deep-ultraviolet LEDs and the application of deep-ultraviolet LEDs; through the understanding of the packaging materials, packaging structure, packaging process and so on to improve the performance of deep-ultraviolet LEDs, so that it is better to apply to the market, which can be seen that the deep-ultraviolet LEDs have a great prospect for development.
Keywords: deep ultraviolet LED, encapsulation, property
*Corresponding author: Jun Zou, School of Science, Shanghai Institute of Technology, China. Email: zoujun@sit.edu.cn
Abstract: The aim of this study was to evaluate the efficacy of a novel air sterilization system on airborne microorganisms in both lab envi-ronment and office environment. Here we used a UV-C LED based technique to continuously purify the air. It was observed that in lab testing environment, the disinfection rate of the UV-C LED system is 99.94% against staphylococci albus (8032) within a 20 m3 space in 2 hours, while 99.6%, 99.02% and 98.65% against natural microorganisms in 2 hours within 100 m3, 150 m3 and 210 m3 space respectively. Additionally, for a 5-day onsite testing conducted in normally operating offices, the results show a disinfection rate up to 92% against natural airborne microorganisms. The results also show zero ozone emission from the UV-C LED based air sterilization de-vices. This study demonstrates a promising role for this UV-C LED based novel technology in infection control and prevention by de-creasing the spread of airborne pathogens effectively and efficiently without introducing hazardous mercury or any chemicals.
Keywords: UV-C LED, air sterilization, mercury-free, ozone-free, infection control and prevention.
Abstract: The spread of infectious diseases within hospitals is notably exacerbated by cross-contamination through small medical devices such as mobile phones, blood pressure monitors, and glucose meters. However, current disinfection equipment has significant limitations: it is not only difficult to adapt to medical devices of various sizes, but also incapable of subjecting delicate electronic equipment to high-temperature disinfection processes. This situation severely hampers the effective implementation of infection prevention and control measures in hospitals. This study addresses the aforementioned challenges by designing a surface disinfection cabinet for small medical devices, utilizing UV-C LED technology as its core component. Through simulation modeling and practical testing, the disinfection efficacy of this technology on devices such as mobile phones, PDAs, and blood pressure monitors was evaluated. Collected three mobile phones, one tablet, two device remotes, and one packaging box from laboratory personnel, totaling seven small items of different materials and specifications. The colony counts before and after using the device were collected and tested, with each test repeated more than three times. The results indicate a significant reduction in the number of bacterial colonies on the sample surfaces before and after disinfection, with an average sterilization rate of 99.4%. The growth of natural bacteria in the culture dishes was less than 1 CFU/cm², meeting the requirement of a reduction in natural bacterial count by more than 1.00 log as stipulated by GB27952-2020 "General Requirements for Disinfectants on Common Object Surfaces". Additionally, tests confirmed that the device does not produce ozone and poses no risk of ultraviolet leakage in the laboratory within the factory premises, allowing for continuous use in rooms with people present.
Application of UV-C LED Technology in Air sterilizer: Sterilization and Odor Removal
Abstract: Air sterilizers have gained widespread market adoption, but their functionality remains limited to singular purposes such as disinfection or odor removal.The MASSPHOTON ’ s Q6060-D UV-C air sterilizer utilizes solid-state semiconductor technology with UV-C LEDs emitting 260-280nm single-wavelength ultraviolet light, which can inactivate a broad spectrum of microorganisms by blocking DNA and RNA replication. Installed on the ceiling of meeting rooms, garbage rooms, and corridors in a normally operating shopping mall in Hong Kong, the MASSPHOTON ’ s Q6060-D UV-C air sterilizer achieved a sterilization rate of 70.8% in the garbage room and 61.62% in the meeting room. Although during the odor removal test, wall painting activities in a rented shop significantly increased TVOC levels, the use of the MASSPHOTON air sterilizer reduced the initial TVOC level from 10.00 mg/m³ to 3.53 mg/m³ within 2 hours. In a simulated test conducted in a 112 m³ room, after four cigarettes were completely burned, the MASSPHOTON’s Q6060-D UV-C air sterilizer was immediately activated. After 4 hours, the PM2.5 concentration was effectively reduced by 61.1%, and the TVOC concentration was reduced by 98.2%. Using 10% ammonia solution as a volatile ammonia gas test, the ammonia removal rate reached 99.9% within 90 minutes. Based on all experimental results, it can be concluded that the MASSPHOTON ’ s Q6060-D UV-C air sterilizer can effectively reduce the number of natural bacteria in the air while adsorbing particulate matter in the environment, decomposing odor molecules, maintaining air cleanliness and freshness, preventing the spread of respiratory diseases, and protecting vulnerable populations.
Keywords: UV-C LED, Natural bacteria, Photocatalyst, Ozone-free, infection control and prevention
Recent Posts
Blogs
A Deep Dive into the Working Mechanism of UV-C LEDs: From Electrical Current to Germicidal Light
| Product Description1）This area can be fully edited and gives you the opportunity tointroduce yourself, your website, your products or your services. This area can be fully edited and gives you the opportunity to introduce yourself, your website, your products or your services. This area can be ful
Blogs
Which Is Better in Water Purifiers: UV Mercury Lamp or UVC-LED?
This area can be fully edited and gives you the opportunity tointroduce yourself, your website, your products or your services. This area can be fully edited and gives you the opportunity to introduce yourself, your website, your products or your services. This area can be ful
Blogs
The Role of Air Sterilizers in Medical And Healthcare Facilities
In hospitals, clinics, and other healthcare environments, maintaining a clean and safe indoor atmosphere is more than a matter of comfort—it is a necessity. The very nature of these facilities involves high-risk exposure to pathogens, allergens, and harmful airborne particles. While surface disinfection and proper hygiene protocols are essential, they alone cannot fully prevent the transmission of infectious diseases. This is where air sterilizers come into play.
Blogs
Air Sterilization for Industrial And Commercial Settings: What To Know
Air quality has become a critical issue in today’s business environment, especially in the wake of global health challenges, growing urbanization, and tighter environmental standards. In industrial and commercial settings, where people, machines, and products coexist, air sterilizers are emerging as essential tools to maintain hygiene, safety, and productivity.
Blogs
How UV-C Technology Powers Modern Air Sterilizers
As awareness of indoor air quality has grown over the past decade, air sterilization has moved to the forefront of residential, commercial, and medical facility design. Among the many air purification technologies available today, UV-C (ultraviolet C) technology has emerged as one of the most effective and reliable tools for eliminating airborne pathogens and contaminants. In this blog, we will explore how UV-C technology powers modern air sterilizers, the science behind it, and why it has become a preferred choice in the post-pandemic world.
Blogs
How Air Sterilizers Improve Indoor Air Quality in Homes And Offices
In recent years, there has been a growing awareness of the importance of indoor air quality (IAQ) and its impact on human health, comfort, and productivity. With people spending approximately 90% of their time indoors, the quality of the air we breathe inside our homes and workplaces has become a key focus. One of the most effective technologies used to improve IAQ is the air sterilizer.
Blogs
What Microorganisms Are Killed by UV Water Treatment?
UV water treatment is a safe, chemical-free method that effectively kills bacteria, viruses, protozoa, and algae, ensuring clean and pathogen-free water.
Blogs
Do UV Surface Disinfection Cabinets Work?
| Product Description1）This area can be fully edited and gives you the opportunity tointroduce yourself, your website, your products or your services. This area can be fully edited and gives you the opportunity to introduce yourself, your website, your products or your services. This area can be ful
Blogs
How UV Light Kills Bacteria & Viruses in Water
| Product Description1）This area can be fully edited and gives you the opportunity tointroduce yourself, your website, your products or your services. This area can be fully edited and gives you the opportunity to introduce yourself, your website, your products or your services. This area can be ful
Blogs
What is a UVC LED Water Disinfection and how it works?
| Product Description1）This area can be fully edited and gives you the opportunity tointroduce yourself, your website, your products or your services. This area can be fully edited and gives you the opportunity to introduce yourself, your website, your products or your services. This area can be ful