UCSB and Research Partners to Work on High Efficiency UV LED based on AlGaN/SiC to Combat Coronavirus

UC Santa Barbara’s Solid State Lighting & Energy Electronics Center (SSLEEC) and member companies are developing UV LEDs that have the ability to decontaminate surfaces — and potentially air and water — that have come in contact with the coronavirus (SARS-CoV-2 virus) to combat the world spreading disease.

Recently, much attention has turned to the power of UV light to inactivate the novel coronavirus and Seoul Semiconductor, a SSLEEC member company, reported its achievement of “99.9% sterilization of coronavirus (COVID-19) in 30 seconds” with their UV LED products. Their technology currently is being adopted for automotive use, in UV LED lamps that sterilize the interior of unoccupied vehicles.


(Image: LEDinside)

Before the COVID-19 pandemic gained global momentum, materials scientists at SSLEEC were already at work advancing UV-C LED technology. This area of the electromagnetic spectrum is a relatively new frontier for solid-state lighting and many advances are still required for UV LEDs to reach its potential in terms of efficiency, cost, reliability and lifetime.

In a letter published in the journal ACS Photonics, the researchers reported a more elegant method for fabricating high-quality deep-ultraviolet (UV-C) LEDs that involves depositing a film of the semiconductor AlGaN on a substrate of SiC instead of the more widely used sapphire substrate.

The researchers found that SiC substrate enables more efficient and cost-effective growth of high-quality UV-C semiconductor material due to how closely the materials’ atomic structures match up. Also, SiC is far less expensive than the “ideal” aluminum nitride substrate, making it more mass production-friendly.

The team will continue to work on improving AlGaN/SiC platform to hopefully produce the world’s most efficient UV-C light emitters when research activities resume at UCSB.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Tokushima, Japan – 25 January 2023: Nichia, the world’s largest LED manufacturer and inventor of high-brightness blue and white LEDs, is pleased to announce the additions of the NVSW719AC and NVSW219C-V2 to its industry standard ce... READ MORE

Pro9™ LEDs set the new standard for high fidelity (90 & 95 CRI min) LEDs   15% higher efficacy for 90 & 95 CRI LEDs 90 CRI light quality at 80 CRI LPW 95 CRI light quality at 90 CRI LPW Upgrade light quality without sacrific... READ MORE