FOR IMMEDIATE RELEASE
Silanna
UV Makes Ultraviolet LED Manufacturing Breakthrough With Nanostructures
Easy
wavelength tuning, higher power at short wavelengths, and exceptional
lifetime performance
Brisbane, Australia, 15
September, 2022 - A
major breakthrough in UV-C LED technology from Silanna
UV offers huge advantages for applications as diverse as disinfection,
water quality monitoring, gas sensing, liquid chromatography, and
chemical and biological analysis. The new manufacturing approach
promises to make deep ultraviolet and far ultraviolet LEDs easier to
make, more efficient at shorter wavelengths, and more reliable. With
the renewed focus on air, water and surface disinfection following the
Covid-19 pandemic, these next-generation UV LEDs are already attracting
interest.
Silanna UV’s groundbreaking patented short period superlattice (SPSL) approach
overcomes many of the difficulties that plague competing AlGaN UV-C LED
technologies. In essence, Silanna UV has effectively created a new
material, a nanostructure, which is much easier to control and has
properties that are far superior to traditional AlGaN. The benefits for
UV-C LED quality are revolutionary.
Moving
beyond traditional UV LEDs
For years, UV-C LED manufacturers have relied on traditional AlGaN
Aluminum Gallium Nitride alloy) formulas. In theory, by adjusting the
ratio of aluminum and gallium metal in the alloy lattice, the bandgap
can be tuned to produce UV emissions from 340 nm to 210 nm, covering
most of the UV spectrum. But in reality, emission below 260nm require
high Al-content AlGaN, which, unlike GaN, makes it very difficult to
achieve desirable n and p-type doping, particularly at the shortest
wavelengths, leading to poor electrical performance. High-Al content
AlGaN also suffers from light extraction issues due to the polarization
of emitted light, causing significant loss of light output,
particularly in the far UV range below 240nm.
Silanna
UV’s breakthrough SPSL material
To overcome these problems in UV LEDs, Silanna UV uses new technology.
Instead of the common AlGaN method, Silanna UV uses SPSL.
In this approach, rather than using a crude old-fashioned ternary
alloy, alternating layers of AlN and GaN (as many as several hundred
layers) are meticulously built up to create a so-called SPSL. Unlike a
traditional ternary alloy, this SPSL’s key properties – including
bandgap and conductivity – can be finely tuned by simply adjusting the
thickness of the constituent layers. This means that the issues caused
by High-Al content AlGaN are mitigated – in particular, that older
method’s poor electrical characteristics and short wavelength
light-loss.
The SPSL technology gives Silanna UV huge advantages over UV-C LED
competitors, including the maintenance of high power at shorter
wavelengths, superior electrical properties, and outstanding lifetime
performance.
For more information on Silanna UV’s technology and UV-C LED products
can contact the Sales Team at [email protected].
About
Silanna UV
The Silanna Group is an Australian semiconductor manufacturer
established in 2006. Privately funded since being acquired from
Peregrine Semiconductor in 2008, Silanna UV is an ISO 9001:2015
certified solution provider for UV-C LED manufacturing. Based in
Brisbane, Australia, Silanna UV provides far UV-C light sources for
water quality sensors, gas sensors, disinfection, and HPLC
(High-performance liquid chromatography) applications. Silanna UV’s
innovative approach allows UV LED technology to push toward shorter
wavelengths, from 230nm to 265nm, including deep UV-C and far UV-C
ranges. The company holds unique epitaxy technology and holds patents
related to UV LED technology. With its unique UV LED technology,
Silanna UV strives to create new possibilities by pushing UV wavelength
boundaries to the limit. To learn more, please visit http://www.silannauv.com/.