WHU team improves light extraction efficiency of AlGaN-based deep-ultraviolet LEDs via SiO2 insertion structure Researchers from Wuhan University in China have unveiled a new approach to boost the performance of AlGaN-based deep-ultraviolet light-emitting diode (DUV LED) by employing tailored quantum wells and SiO2 insertion structure. “We combine bandgap engineering with device craft to improve the radiative recombination efficiency and light extraction efficiency of the AlGaN-based DUV LED. Introducing the tailored quantum wells suppresses...

AlGaN-based DUV-LEDs are receiving much research attention due to their potential use in sterilization, water purification, phototherapy, and sunlight-independent high-speed optical communication. Scientists are investigating ways to improve their efficiency in converting electrical energy into optical energy. Deep UV LEDs made from AlGaN efficiently transfer electrical energy to optical energy due to the growth of one of its bottom layers in a step-like fashion. This finding, published in the journal Applied Physics Letters, can lead to the development of even more...

Professional UV and IR LED manufacturer High Power Lighting (HPL) has partnered with Epileds to establish a joint venture, Bioraytron. Bioraytron is a DUV LED manufacture company specializing in vertically integration of DUV LED from the production of epitaxy and wafer to packaging. Bioraytron will participate in BioOpto Japan 2018. The 10th BioOpto Japan will be held from October 17th to 19th 2018 in Chiba, Japan.

RayVio, an advanced health and hygiene company, today announced study results from efficacy testing of its deep ultraviolet (UV) LED solution for disinfection. The study shows that RayVio’s deep UV LEDs can eliminate bacteria found in hospitals and homes more quickly and to a higher degree than today’s most common disinfection products, aiding in the fight against hospital acquired infections (HAI).

The LED industry is hunting for innovative technologies and application fields, as lighting and backlight market growth wane. UV LEDs over the past year has caught many LED manufacturers attention, the budding UV-A LED market application sector in nail curing, air purification, and printing applications is attracting top LED players including Nichia and Osram to invest in the sector. UV-C LED or DUV LED that has a wavelength ranging from 200 nm to 280 nm remains a market sector that barely exists at the moment, due to certain technical challenges that call for new solutions.

Matheson Tri-Gas, Inc., together with its parent company, Taiyo Nippon Sanso Corporation (TNSC), has announced that the Solid State Lighting & Energy Electronics Center (SSLEEC), the world renowned research center at the University of California, Santa Barbara, installed an SR-4000HT grade gallium nitride (GaN) metal organic chemical vapor deposition (MOCVD) reactor for its continued compound semiconductor device developmental work for UVCLED. SSLEEC is co-directed by Nobel Prize-winning Professor Shuji Nakamura and Professor Steven DenBaars.