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Silanna UV to present latest UVC tech in Berlin


High power at short wavelengths achieved with short period superlattice technology

At the International Conference on UV LED Technologies & Applications (ICULTA) in Berlin, Silanna UV will present technology that pushes the boundaries of far UVC LEDs to emit at shorter wavelengths, at higher power, and with longer lifetimes.

Described by the company as 'revolutionary', the new short period superlattice (SPSL) UVC LED technology is aimed at applications as diverse as disinfection, water quality monitoring, gas sensing, liquid chromatography, and chemical and biological analysis.

Standard AlGaN-based far UVC LEDs tend to suffer from poor carrier injection, low light emission and high drive voltage, due to the inherit limitations of high Al-content AlGaN.

Silanna's SPSL devices are composed of repeating layers of AlN and GaN. As a result, Silanna says the presence of GaN maintains the TE (transverse electric) dominance of the emission as well as lowering the activation energy of donors, resulting in more efficient devices compared to LEDs made with conventional AlGaN technology. Furthermore, the emission wavelength can be easily tuned using the thickness of the GaN well, a process that is significantly easier to control than tuning of Al composition in the barrier and well.

William Lee, Silanna UV’s product development manager, will give a talk, 'High Power 235nm far UVC LED using SPSL technology' on April 24 from 10.00-10.30am at UV ICULTA 2023, Melia Berlin, Berlin, Germany

The company will also exhibit its SF1 series 235nm and SF3 series 255 nm UV LEDs at the conference.

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